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Vulnerability Details :

CVE-2026-8390

Summary
Assigner-mozilla
Assigner Org ID-f16b083a-5664-49f3-a51e-8d479e5ed7fe
Published At-12 May, 2026 | 12:36
Updated At-13 May, 2026 | 18:30
Rejected At-
Credits

Use-after-free in the JavaScript: WebAssembly component

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150.0.3.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
â–¼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:mozilla
Assigner Org ID:f16b083a-5664-49f3-a51e-8d479e5ed7fe
Published At:12 May, 2026 | 12:36
Updated At:13 May, 2026 | 18:30
Rejected At:
â–¼CVE Numbering Authority (CNA)
Use-after-free in the JavaScript: WebAssembly component

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150.0.3.

Affected Products
Vendor
Mozilla CorporationMozilla
Product
Firefox
Versions
Unaffected
  • From 150.0.3 through * (rpm)
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

OpenAI Preparedness, Bill Demirkapi
Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://bugzilla.mozilla.org/show_bug.cgi?id=2038081
N/A
https://www.mozilla.org/security/advisories/mfsa2026-45/
N/A
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=2038081
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-45/
Resource: N/A
â–¼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Problem Types
TypeCWE IDDescription
CWECWE-416CWE-416 Use After Free
Type: CWE
CWE ID: CWE-416
Description: CWE-416 Use After Free
Metrics
VersionBase scoreBase severityVector
3.17.3HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Version: 3.1
Base score: 7.3
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Information is not available yet
â–¼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security@mozilla.org
Published At:12 May, 2026 | 14:17
Updated At:14 May, 2026 | 18:53

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150.0.3.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.17.3HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Type: Secondary
Version: 3.1
Base score: 7.3
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CPE Matches

Mozilla Corporation
mozilla
>>firefox>>Versions before 150.0.3(exclusive)
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
Weaknesses
CWE IDTypeSource
CWE-416Secondary134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE ID: CWE-416
Type: Secondary
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://bugzilla.mozilla.org/show_bug.cgi?id=2038081security@mozilla.org
Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-45/security@mozilla.org
Vendor Advisory
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=2038081
Source: security@mozilla.org
Resource:
Permissions Required
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-45/
Source: security@mozilla.org
Resource:
Vendor Advisory

Change History

0
Information is not available yet

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||
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||
7 Day CHG~0.00%
Published-10 Oct, 2012 | 17:00
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Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
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Matching Score-6
Assigner-MITRE Corporation
ShareView Details
Matching Score-6
Assigner-MITRE Corporation
CVSS Score-9.3||HIGH
EPSS-2.34% / 85.02%
||
7 Day CHG~0.00%
Published-21 Nov, 2012 | 11:00
Updated-29 Apr, 2026 | 01:13
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Use-after-free vulnerability in the nsPlaintextEditor::FireClipboardEvent function in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

Action-Not Available
Vendor-n/aCanonical Ltd.openSUSESUSERed Hat, Inc.Mozilla Corporation
Product-thunderbirdfirefoxubuntu_linuxseamonkeylinux_enterprise_desktopenterprise_linux_serverenterprise_linux_workstationthunderbird_esrenterprise_linux_desktoplinux_enterprise_serverenterprise_linux_euslinux_enterprise_software_development_kitopensusen/a
CWE ID-CWE-416
Use After Free
CVE-2012-3990
Matching Score-6
Assigner-MITRE Corporation
ShareView Details
Matching Score-6
Assigner-MITRE Corporation
CVSS Score-9.3||HIGH
EPSS-6.07% / 90.84%
||
7 Day CHG~0.00%
Published-10 Oct, 2012 | 17:00
Updated-29 Apr, 2026 | 01:13
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Use-after-free vulnerability in the IME State Manager implementation in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 allows remote attackers to execute arbitrary code via unspecified vectors, related to the nsIContent::GetNameSpaceID function.

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Vendor-n/aCanonical Ltd.SUSERed Hat, Inc.Mozilla CorporationDebian GNU/Linux
Product-thunderbirdlinux_enterprise_sdkfirefoxubuntu_linuxseamonkeyenterprise_linux_serverenterprise_linux_workstationdebian_linuxthunderbird_esrlinux_enterprise_desktopenterprise_linux_desktoplinux_enterprise_serverenterprise_linux_eusn/a
CWE ID-CWE-416
Use After Free
CVE-2012-4179
Matching Score-6
Assigner-MITRE Corporation
ShareView Details
Matching Score-6
Assigner-MITRE Corporation
CVSS Score-9.3||HIGH
EPSS-6.07% / 90.84%
||
7 Day CHG~0.00%
Published-10 Oct, 2012 | 17:00
Updated-29 Apr, 2026 | 01:13
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

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Action-Not Available
Vendor-n/aCanonical Ltd.SUSERed Hat, Inc.Mozilla CorporationDebian GNU/Linux
Product-thunderbirdlinux_enterprise_sdkfirefoxubuntu_linuxseamonkeyenterprise_linux_serverenterprise_linux_workstationdebian_linuxthunderbird_esrlinux_enterprise_desktopenterprise_linux_desktoplinux_enterprise_serverenterprise_linux_eusn/a
CWE ID-CWE-416
Use After Free
CVE-2012-3988
Matching Score-6
Assigner-MITRE Corporation
ShareView Details
Matching Score-6
Assigner-MITRE Corporation
CVSS Score-9.3||HIGH
EPSS-3.99% / 88.53%
||
7 Day CHG~0.00%
Published-10 Oct, 2012 | 17:00
Updated-29 Apr, 2026 | 01:13
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Use-after-free vulnerability in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 might allow user-assisted remote attackers to execute arbitrary code via vectors involving use of mozRequestFullScreen to enter full-screen mode, and use of the history.back method for backwards history navigation.

Action-Not Available
Vendor-n/aCanonical Ltd.SUSERed Hat, Inc.Mozilla Corporation
Product-thunderbirdlinux_enterprise_sdkfirefoxubuntu_linuxseamonkeyenterprise_linux_serverenterprise_linux_workstationlinux_enterprise_desktopthunderbird_esrenterprise_linux_desktoplinux_enterprise_serverenterprise_linux_eusn/a
CWE ID-CWE-416
Use After Free
CVE-2017-7819
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-6.92% / 91.49%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-25 Nov, 2025 | 17:50
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A use-after-free vulnerability can occur in design mode when image objects are resized if objects referenced during the resizing have been freed from memory. This results in a potentially exploitable crash. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.

Action-Not Available
Vendor-Mozilla CorporationDebian GNU/LinuxRed Hat, Inc.
Product-thunderbirdfirefoxenterprise_linux_desktopenterprise_linux_server_eusenterprise_linux_serverdebian_linuxenterprise_linux_workstationenterprise_linux_server_ausFirefoxFirefox ESRThunderbird
CWE ID-CWE-416
Use After Free
CVE-2017-7818
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-6.92% / 91.49%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-25 Nov, 2025 | 17:50
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A use-after-free vulnerability can occur when manipulating arrays of Accessible Rich Internet Applications (ARIA) elements within containers through the DOM. This results in a potentially exploitable crash. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.

Action-Not Available
Vendor-Mozilla CorporationDebian GNU/LinuxRed Hat, Inc.
Product-thunderbirdfirefoxenterprise_linux_desktopenterprise_linux_server_eusenterprise_linux_serverdebian_linuxenterprise_linux_workstationenterprise_linux_server_ausFirefoxFirefox ESRThunderbird
CWE ID-CWE-416
Use After Free
CVE-2017-7757
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-1.87% / 83.33%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-25 Nov, 2025 | 17:50
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A use-after-free vulnerability in IndexedDB when one of its objects is destroyed in memory while a method on it is still being executed. This results in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.

Action-Not Available
Vendor-Debian GNU/LinuxMozilla Corporation
Product-thunderbirddebian_linuxfirefoxFirefoxFirefox ESRThunderbird
CWE ID-CWE-416
Use After Free
CVE-2017-7800
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-4.29% / 88.95%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-25 Nov, 2025 | 17:50
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A use-after-free vulnerability can occur in WebSockets when the object holding the connection is freed before the disconnection operation is finished. This results in an exploitable crash. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.

Action-Not Available
Vendor-Mozilla CorporationDebian GNU/LinuxRed Hat, Inc.
Product-thunderbirdfirefoxenterprise_linuxenterprise_linux_desktopenterprise_linux_serverdebian_linuxenterprise_linux_server_eusenterprise_linux_workstationenterprise_linux_server_ausThunderbirdFirefox ESRFirefox
CWE ID-CWE-416
Use After Free
CVE-2012-1976
Matching Score-6
Assigner-MITRE Corporation
ShareView Details
Matching Score-6
Assigner-MITRE Corporation
CVSS Score-10||HIGH
EPSS-3.17% / 87.08%
||
7 Day CHG~0.00%
Published-29 Aug, 2012 | 10:00
Updated-29 Apr, 2026 | 01:13
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Use-after-free vulnerability in the nsHTMLSelectElement::SubmitNamesValues function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

Action-Not Available
Vendor-n/aCanonical Ltd.openSUSESUSERed Hat, Inc.Mozilla Corporation
Product-thunderbirdfirefoxubuntu_linuxseamonkeylinux_enterprise_desktopenterprise_linux_serverenterprise_linux_workstationthunderbird_esrenterprise_linux_desktoplinux_enterprise_serverenterprise_linux_server_eusenterprise_linux_euslinux_enterprise_software_development_kitopensusen/a
CWE ID-CWE-416
Use After Free
CVE-2012-1973
Matching Score-6
Assigner-MITRE Corporation
ShareView Details
Matching Score-6
Assigner-MITRE Corporation
CVSS Score-10||HIGH
EPSS-4.25% / 88.89%
||
7 Day CHG~0.00%
Published-29 Aug, 2012 | 10:00
Updated-29 Apr, 2026 | 01:13
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Use-after-free vulnerability in the nsObjectLoadingContent::LoadObject function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

Action-Not Available
Vendor-n/aCanonical Ltd.openSUSESUSERed Hat, Inc.Mozilla CorporationDebian GNU/Linux
Product-thunderbirdfirefoxubuntu_linuxseamonkeylinux_enterprise_desktopenterprise_linux_serverenterprise_linux_workstationthunderbird_esrdebian_linuxenterprise_linux_desktoplinux_enterprise_serverenterprise_linux_server_eusenterprise_linux_euslinux_enterprise_software_development_kitopensusen/a
CWE ID-CWE-416
Use After Free
CVE-2012-1975
Matching Score-6
Assigner-MITRE Corporation
ShareView Details
Matching Score-6
Assigner-MITRE Corporation
CVSS Score-10||HIGH
EPSS-3.31% / 87.38%
||
7 Day CHG~0.00%
Published-29 Aug, 2012 | 10:00
Updated-29 Apr, 2026 | 01:13
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Use-after-free vulnerability in the PresShell::CompleteMove function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

Action-Not Available
Vendor-n/aCanonical Ltd.openSUSESUSERed Hat, Inc.Mozilla CorporationDebian GNU/Linux
Product-thunderbirdfirefoxubuntu_linuxseamonkeylinux_enterprise_desktopenterprise_linux_serverenterprise_linux_workstationthunderbird_esrdebian_linuxenterprise_linux_desktoplinux_enterprise_serverenterprise_linux_server_eusenterprise_linux_euslinux_enterprise_software_development_kitopensusen/a
CWE ID-CWE-416
Use After Free
CVE-2012-1974
Matching Score-6
Assigner-MITRE Corporation
ShareView Details
Matching Score-6
Assigner-MITRE Corporation
CVSS Score-10||HIGH
EPSS-3.31% / 87.38%
||
7 Day CHG~0.00%
Published-29 Aug, 2012 | 10:00
Updated-29 Apr, 2026 | 01:13
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Use-after-free vulnerability in the gfxTextRun::CanBreakLineBefore function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

Action-Not Available
Vendor-n/aCanonical Ltd.openSUSESUSERed Hat, Inc.Mozilla CorporationDebian GNU/Linux
Product-thunderbirdfirefoxubuntu_linuxseamonkeylinux_enterprise_desktopenterprise_linux_serverenterprise_linux_workstationthunderbird_esrdebian_linuxenterprise_linux_desktoplinux_enterprise_serverenterprise_linux_server_eusenterprise_linux_euslinux_enterprise_software_development_kitopensusen/a
CWE ID-CWE-416
Use After Free
CVE-2023-37209
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-0.25% / 48.06%
||
7 Day CHG~0.00%
Published-05 Jul, 2023 | 09:05
Updated-13 Feb, 2025 | 16:56
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A use-after-free condition existed in `NotifyOnHistoryReload` where a `LoadingSessionHistoryEntry` object was freed and a reference to that object remained. This resulted in a potentially exploitable condition when the reference to that object was later reused. This vulnerability affects Firefox < 115.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxFirefox
CWE ID-CWE-416
Use After Free
CVE-2012-1972
Matching Score-6
Assigner-MITRE Corporation
ShareView Details
Matching Score-6
Assigner-MITRE Corporation
CVSS Score-10||HIGH
EPSS-3.31% / 87.38%
||
7 Day CHG~0.00%
Published-29 Aug, 2012 | 10:00
Updated-29 Apr, 2026 | 01:13
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Use-after-free vulnerability in the nsHTMLEditor::CollapseAdjacentTextNodes function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

Action-Not Available
Vendor-n/aCanonical Ltd.openSUSESUSERed Hat, Inc.Mozilla CorporationDebian GNU/Linux
Product-thunderbirdfirefoxubuntu_linuxseamonkeylinux_enterprise_desktopenterprise_linux_serverenterprise_linux_workstationthunderbird_esrdebian_linuxenterprise_linux_desktoplinux_enterprise_serverenterprise_linux_server_eusenterprise_linux_euslinux_enterprise_software_development_kitopensusen/a
CWE ID-CWE-416
Use After Free
CVE-2017-5460
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-1.44% / 80.90%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-25 Nov, 2025 | 17:50
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A use-after-free vulnerability in frame selection triggered by a combination of malicious script content and key presses by a user. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

Action-Not Available
Vendor-Mozilla CorporationDebian GNU/LinuxRed Hat, Inc.
Product-thunderbirdfirefoxenterprise_linuxenterprise_linux_desktopenterprise_linux_serverdebian_linuxenterprise_linux_server_eusenterprise_linux_workstationenterprise_linux_server_ausThunderbirdFirefox ESRFirefox
CWE ID-CWE-416
Use After Free
CVE-2017-5380
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-1.80% / 82.99%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-25 Nov, 2025 | 17:50
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A potential use-after-free found through fuzzing during DOM manipulation of SVG content. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.

Action-Not Available
Vendor-Mozilla CorporationDebian GNU/LinuxRed Hat, Inc.
Product-thunderbirdfirefoxenterprise_linuxenterprise_linux_desktopenterprise_linux_serverdebian_linuxenterprise_linux_server_eusenterprise_linux_workstationenterprise_linux_server_ausThunderbirdFirefox ESRFirefox
CWE ID-CWE-416
Use After Free
CVE-2017-5402
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-2.56% / 85.67%
||
7 Day CHG+0.06%
Published-11 Jun, 2018 | 21:00
Updated-25 Nov, 2025 | 17:50
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A use-after-free can occur when events are fired for a "FontFace" object after the object has been already been destroyed while working with fonts. This results in a potentially exploitable crash. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.

Action-Not Available
Vendor-Mozilla CorporationDebian GNU/LinuxRed Hat, Inc.
Product-thunderbirdfirefoxenterprise_linuxenterprise_linux_desktopenterprise_linux_serverdebian_linuxenterprise_linux_server_eusenterprise_linux_workstationenterprise_linux_server_ausFirefoxFirefox ESRThunderbird
CWE ID-CWE-416
Use After Free
CVE-2023-3600
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-0.19% / 40.49%
||
7 Day CHG~0.00%
Published-12 Jul, 2023 | 13:45
Updated-18 Dec, 2025 | 16:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Use-after-free in workers

During the worker lifecycle, a use-after-free condition could have occurred, which could have led to a potentially exploitable crash. This vulnerability affects Firefox < 115.0.2, Firefox ESR < 115.0.2, and Thunderbird < 115.0.1.

Action-Not Available
Vendor-Mozilla Corporation
Product-thunderbirdfirefoxfirefox_esrFirefoxFirefox ESRThunderbird
CWE ID-CWE-416
Use After Free
CVE-2017-5440
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-1.92% / 83.52%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-25 Nov, 2025 | 17:50
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A use-after-free vulnerability during XSLT processing due to a failure to propagate error conditions during matching while evaluating context, leading to objects being used when they no longer exist. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

Action-Not Available
Vendor-Mozilla CorporationDebian GNU/LinuxRed Hat, Inc.
Product-thunderbirdfirefoxenterprise_linuxenterprise_linux_desktopenterprise_linux_serverdebian_linuxenterprise_linux_server_eusenterprise_linux_workstationenterprise_linux_server_ausThunderbirdFirefox ESRFirefox
CWE ID-CWE-416
Use After Free
CVE-2017-5376
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-1.80% / 82.99%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-25 Nov, 2025 | 17:50
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Use-after-free while manipulating XSL in XSLT documents. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.

Action-Not Available
Vendor-Mozilla CorporationDebian GNU/LinuxRed Hat, Inc.
Product-thunderbirdfirefoxenterprise_linuxenterprise_linux_desktopenterprise_linux_serverdebian_linuxenterprise_linux_server_eusenterprise_linux_workstationenterprise_linux_server_ausThunderbirdFirefox ESRFirefox
CWE ID-CWE-416
Use After Free
CVE-2017-5403
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.52% / 66.87%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-05 Aug, 2024 | 14:55
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

When adding a range to an object in the DOM, it is possible to use "addRange" to add the range to an incorrect root object. This triggers a use-after-free, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 52 and Thunderbird < 52.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxthunderbirdFirefoxThunderbird
CWE ID-CWE-416
Use After Free
CVE-2017-5396
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-3.21% / 87.16%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-25 Nov, 2025 | 17:50
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A use-after-free vulnerability in the Media Decoder when working with media files when some events are fired after the media elements are freed from memory. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.

Action-Not Available
Vendor-Mozilla CorporationDebian GNU/LinuxRed Hat, Inc.
Product-thunderbirdfirefoxenterprise_linuxenterprise_linux_desktopenterprise_linux_serverdebian_linuxenterprise_linux_server_eusenterprise_linux_workstationenterprise_linux_server_ausThunderbirdFirefox ESRFirefox
CWE ID-CWE-416
Use After Free
CVE-2017-5411
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-7.5||HIGH
EPSS-0.74% / 73.02%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-05 Aug, 2024 | 14:55
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A use-after-free can occur during buffer storage operations within the ANGLE graphics library, used for WebGL content. The buffer storage can be freed while still in use in some circumstances, leading to a potentially exploitable crash. Note: This issue is in "libGLES", which is only in use on Windows. Other operating systems are not affected. This vulnerability affects Firefox < 52 and Thunderbird < 52.

Action-Not Available
Vendor-Mozilla CorporationMicrosoft Corporation
Product-firefoxwindowsthunderbirdFirefoxThunderbird
CWE ID-CWE-416
Use After Free
CVE-2017-5441
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-1.92% / 83.52%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-25 Nov, 2025 | 17:50
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A use-after-free vulnerability when holding a selection during scroll events. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

Action-Not Available
Vendor-Mozilla CorporationDebian GNU/LinuxRed Hat, Inc.
Product-thunderbirdfirefoxenterprise_linuxenterprise_linux_desktopenterprise_linux_serverdebian_linuxenterprise_linux_server_eusenterprise_linux_workstationenterprise_linux_server_ausThunderbirdFirefox ESRFirefox
CWE ID-CWE-416
Use After Free
CVE-2017-5447
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.1||CRITICAL
EPSS-17.13% / 95.08%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-25 Nov, 2025 | 17:50
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

An out-of-bounds read during the processing of glyph widths during text layout. This results in a potentially exploitable crash and could allow an attacker to read otherwise inaccessible memory. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

Action-Not Available
Vendor-Mozilla CorporationDebian GNU/LinuxRed Hat, Inc.
Product-thunderbirdfirefoxenterprise_linuxenterprise_linux_desktopenterprise_linux_serverdebian_linuxenterprise_linux_server_eusenterprise_linux_workstationenterprise_linux_server_ausThunderbirdFirefox ESRFirefox
CWE ID-CWE-416
Use After Free
CVE-2017-5439
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-1.92% / 83.52%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-25 Nov, 2025 | 17:50
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A use-after-free vulnerability during XSLT processing due to poor handling of template parameters. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

Action-Not Available
Vendor-Mozilla CorporationDebian GNU/LinuxRed Hat, Inc.
Product-thunderbirdfirefoxenterprise_linuxenterprise_linux_desktopenterprise_linux_serverdebian_linuxenterprise_linux_server_eusenterprise_linux_workstationenterprise_linux_server_ausThunderbirdFirefox ESRFirefox
CWE ID-CWE-416
Use After Free
CVE-2023-25747
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-7.5||HIGH
EPSS-0.25% / 47.90%
||
7 Day CHG~0.00%
Published-19 Jun, 2023 | 10:10
Updated-11 Dec, 2024 | 16:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A potential use-after-free in libaudio was fixed by disabling the AAudio backend when running on Android API below version 30. *This bug only affects Firefox for Android. Other versions of Firefox are unaffected.* This vulnerability affects Firefox for Android < 110.1.0.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxFirefox for Android
CWE ID-CWE-416
Use After Free
CVE-2023-25739
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-0.21% / 42.98%
||
7 Day CHG~0.00%
Published-02 Jun, 2023 | 00:00
Updated-09 Jan, 2025 | 20:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Module load requests that failed were not being checked as to whether or not they were cancelled causing a use-after-free in <code>ScriptLoadContext</code>. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.

Action-Not Available
Vendor-Mozilla Corporation
Product-thunderbirdfirefoxfirefox_esrThunderbirdFirefox ESRFirefox
CWE ID-CWE-416
Use After Free
CVE-2019-11752
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-0.89% / 75.82%
||
7 Day CHG~0.00%
Published-27 Sep, 2019 | 17:14
Updated-25 Nov, 2025 | 17:50
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

It is possible to delete an IndexedDB key value and subsequently try to extract it during conversion. This results in a use-after-free and a potentially exploitable crash. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefox_esrthunderbirdfirefoxFirefoxFirefox ESRThunderbird
CWE ID-CWE-416
Use After Free
CVE-2019-11746
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-0.65% / 71.10%
||
7 Day CHG~0.00%
Published-27 Sep, 2019 | 17:16
Updated-25 Nov, 2025 | 17:50
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A use-after-free vulnerability can occur while manipulating video elements if the body is freed while still in use. This results in a potentially exploitable crash. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefox_esrthunderbirdfirefoxFirefoxFirefox ESRThunderbird
CWE ID-CWE-416
Use After Free
CVE-2017-5438
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-1.92% / 83.52%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-25 Nov, 2025 | 17:50
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A use-after-free vulnerability during XSLT processing due to the result handler being held by a freed handler during handling. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

Action-Not Available
Vendor-Mozilla CorporationDebian GNU/LinuxRed Hat, Inc.
Product-thunderbirdfirefoxenterprise_linuxenterprise_linux_desktopenterprise_linux_serverdebian_linuxenterprise_linux_server_eusenterprise_linux_workstationenterprise_linux_server_ausThunderbirdFirefox ESRFirefox
CWE ID-CWE-416
Use After Free
CVE-2017-5433
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.83% / 74.73%
||
7 Day CHG-0.61%
Published-11 Jun, 2018 | 21:00
Updated-25 Nov, 2025 | 17:50
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A use-after-free vulnerability in SMIL animation functions occurs when pointers to animation elements in an array are dropped from the animation controller while still in use. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

Action-Not Available
Vendor-Mozilla CorporationDebian GNU/LinuxRed Hat, Inc.
Product-thunderbirdfirefoxenterprise_linuxenterprise_linux_desktopenterprise_linux_serverdebian_linuxenterprise_linux_server_eusenterprise_linux_workstationenterprise_linux_server_ausThunderbirdFirefox ESRFirefox
CWE ID-CWE-416
Use After Free
CVE-2017-5031
Matching Score-6
Assigner-Chrome
ShareView Details
Matching Score-6
Assigner-Chrome
CVSS Score-8.8||HIGH
EPSS-0.76% / 73.51%
||
7 Day CHG~0.00%
Published-24 Apr, 2017 | 23:00
Updated-13 May, 2026 | 00:24
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A use after free in ANGLE in Google Chrome prior to 57.0.2987.98 for Windows allowed a remote attacker to perform an out of bounds memory read via a crafted HTML page.

Action-Not Available
Vendor-Mozilla CorporationMicrosoft CorporationGoogle LLC
Product-chromewindowsFirefoxFirefox ESR
CWE ID-CWE-416
Use After Free
CVE-2024-2612
Matching Score-6
Assigner-Mozilla Corporation
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Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-8.1||HIGH
EPSS-1.77% / 82.85%
||
7 Day CHG~0.00%
Published-19 Mar, 2024 | 12:02
Updated-17 Jul, 2025 | 13:35
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

If an attacker could find a way to trigger a particular code path in `SafeRefPtr`, it could have triggered a crash or potentially be leveraged to achieve code execution. This vulnerability affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird < 115.9.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxthunderbirdFirefox ESRFirefoxThunderbirdfirefoxfirefox_esrthunderbird
CWE ID-CWE-416
Use After Free
CVE-2012-3961
Matching Score-6
Assigner-MITRE Corporation
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Matching Score-6
Assigner-MITRE Corporation
CVSS Score-10||HIGH
EPSS-2.09% / 84.22%
||
7 Day CHG~0.00%
Published-29 Aug, 2012 | 10:00
Updated-29 Apr, 2026 | 01:13
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Use-after-free vulnerability in the RangeData implementation in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

Action-Not Available
Vendor-n/aCanonical Ltd.openSUSESUSERed Hat, Inc.Mozilla Corporation
Product-thunderbirdfirefoxubuntu_linuxseamonkeylinux_enterprise_desktopenterprise_linux_serverenterprise_linux_workstationthunderbird_esrenterprise_linux_desktoplinux_enterprise_serverenterprise_linux_server_eusenterprise_linux_euslinux_enterprise_software_development_kitopensusen/a
CWE ID-CWE-416
Use After Free
CVE-2024-7530
Matching Score-6
Assigner-Mozilla Corporation
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Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.54% / 67.77%
||
7 Day CHG~0.00%
Published-06 Aug, 2024 | 12:38
Updated-12 Aug, 2024 | 16:09
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Incorrect garbage collection interaction could have led to a use-after-free. This vulnerability affects Firefox < 129.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxFirefoxfirefox
CWE ID-CWE-416
Use After Free
CVE-2024-8394
Matching Score-6
Assigner-Mozilla Corporation
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Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-6.5||MEDIUM
EPSS-0.40% / 60.74%
||
7 Day CHG~0.00%
Published-06 Sep, 2024 | 16:16
Updated-19 Mar, 2025 | 18:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

When aborting the verification of an OTR chat session, an attacker could have caused a use-after-free bug leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 128.2.

Action-Not Available
Vendor-Mozilla Corporation
Product-thunderbirdThunderbird
CWE ID-CWE-416
Use After Free
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