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CVE Vulnerability Details :
CVE-2019-17026
PUBLISHED
More InfoOfficial Page
Assigner-mozilla
Assigner Org ID-f16b083a-5664-49f3-a51e-8d479e5ed7fe
View Known Exploited Vulnerability (KEV) details
Published At-02 Mar, 2020 | 04:05
Updated At-21 Oct, 2025 | 23:35
Rejected At-
▼CVE Numbering Authority (CNA)

Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type confusion. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR < 68.4.1, Thunderbird < 68.4.1, and Firefox < 72.0.1.

Affected Products
Vendor
Mozilla CorporationMozilla
Product
Firefox ESR
Versions
Affected
  • From unspecified before 68.4.1 (custom)
Vendor
Mozilla CorporationMozilla
Product
Thunderbird
Versions
Affected
  • From unspecified before 68.4.1 (custom)
Vendor
Mozilla CorporationMozilla
Product
Firefox
Versions
Affected
  • From unspecified before 72.0.1 (custom)
Problem Types
TypeCWE IDDescription
textN/AIonMonkey type confusion with StoreElementHole and FallibleStoreElement
Type: text
CWE ID: N/A
Description: IonMonkey type confusion with StoreElementHole and FallibleStoreElement
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.mozilla.org/security/advisories/mfsa2020-04/
x_refsource_MISC
https://www.mozilla.org/security/advisories/mfsa2020-03/
x_refsource_MISC
https://bugzilla.mozilla.org/show_bug.cgi?id=1607443
x_refsource_MISC
https://security.gentoo.org/glsa/202003-02
vendor-advisory
x_refsource_GENTOO
https://usn.ubuntu.com/4335-1/
vendor-advisory
x_refsource_UBUNTU
http://packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-Confusion.html
x_refsource_MISC
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2020-04/
Resource:
x_refsource_MISC
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2020-03/
Resource:
x_refsource_MISC
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=1607443
Resource:
x_refsource_MISC
Hyperlink: https://security.gentoo.org/glsa/202003-02
Resource:
vendor-advisory
x_refsource_GENTOO
Hyperlink: https://usn.ubuntu.com/4335-1/
Resource:
vendor-advisory
x_refsource_UBUNTU
Hyperlink: http://packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-Confusion.html
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
1. 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://www.mozilla.org/security/advisories/mfsa2020-04/
x_refsource_MISC
x_transferred
https://www.mozilla.org/security/advisories/mfsa2020-03/
x_refsource_MISC
x_transferred
https://bugzilla.mozilla.org/show_bug.cgi?id=1607443
x_refsource_MISC
x_transferred
https://security.gentoo.org/glsa/202003-02
vendor-advisory
x_refsource_GENTOO
x_transferred
https://usn.ubuntu.com/4335-1/
vendor-advisory
x_refsource_UBUNTU
x_transferred
http://packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-Confusion.html
x_refsource_MISC
x_transferred
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2020-04/
Resource:
x_refsource_MISC
x_transferred
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2020-03/
Resource:
x_refsource_MISC
x_transferred
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=1607443
Resource:
x_refsource_MISC
x_transferred
Hyperlink: https://security.gentoo.org/glsa/202003-02
Resource:
vendor-advisory
x_refsource_GENTOO
x_transferred
Hyperlink: https://usn.ubuntu.com/4335-1/
Resource:
vendor-advisory
x_refsource_UBUNTU
x_transferred
Hyperlink: http://packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-Confusion.html
Resource:
x_refsource_MISC
x_transferred
2. CISA ADP Vulnrichment
Affected Products
Problem Types
TypeCWE IDDescription
CWECWE-843CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')
Type: CWE
CWE ID: CWE-843
Description: CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')
Metrics
VersionBase scoreBase severityVector
3.18.8HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Version: 3.1
Base score: 8.8
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Metrics Other Info
kev
dateAdded:
2021-11-03
reference:
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-17026
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
CVE-2019-17026 added to CISA KEV2021-11-03 00:00:00
Event: CVE-2019-17026 added to CISA KEV
Date: 2021-11-03 00:00:00
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-17026
government-resource
Hyperlink: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-17026
Resource:
government-resource
Details not found