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CVE Vulnerability Details :
CVE-2025-1012
PUBLISHED
More InfoOfficial Page
Assigner-mozilla
Assigner Org ID-f16b083a-5664-49f3-a51e-8d479e5ed7fe
View Known Exploited Vulnerability (KEV) details
Published At-04 Feb, 2025 | 13:58
Updated At-13 Apr, 2026 | 14:25
Rejected At-
▼CVE Numbering Authority (CNA)
Use-after-free during concurrent delazification

A race during concurrent delazification could have led to a use-after-free. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.

Affected Products
Vendor
Mozilla CorporationMozilla
Product
Firefox
Versions
Unaffected
  • From 115.20 through 115.* (rpm)
  • From 128.7 through 128.* (rpm)
  • From 135 through * (rpm)
Vendor
Mozilla CorporationMozilla
Product
Thunderbird
Versions
Unaffected
  • From 128.7 through 128.* (rpm)
  • From 135 through * (rpm)
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Nils Bars
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://bugzilla.mozilla.org/show_bug.cgi?id=1939710
N/A
https://www.mozilla.org/security/advisories/mfsa2025-07/
N/A
https://www.mozilla.org/security/advisories/mfsa2025-08/
N/A
https://www.mozilla.org/security/advisories/mfsa2025-09/
N/A
https://www.mozilla.org/security/advisories/mfsa2025-10/
N/A
https://www.mozilla.org/security/advisories/mfsa2025-11/
N/A
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=1939710
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-07/
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-08/
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-09/
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-10/
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-11/
Resource: N/A
▼Authorized Data Publishers (ADP)
1. 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
3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
2. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://lists.debian.org/debian-lts-announce/2025/02/msg00006.html
N/A
https://lists.debian.org/debian-lts-announce/2025/02/msg00005.html
N/A
Hyperlink: https://lists.debian.org/debian-lts-announce/2025/02/msg00006.html
Resource: N/A
Hyperlink: https://lists.debian.org/debian-lts-announce/2025/02/msg00005.html
Resource: N/A
Details not found