CVE-2026-2792

Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
References
Link Resource
https://bugzilla.mozilla.org/buglist.cgi?bug_id=2008912%2C2010050%2C2010275%2C2012331 Broken Link
https://www.mozilla.org/security/advisories/mfsa2026-13/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-15/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-16/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-17/ Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:3338
https://access.redhat.com/errata/RHSA-2026:3339
https://access.redhat.com/errata/RHSA-2026:3361
https://access.redhat.com/errata/RHSA-2026:3491
https://access.redhat.com/errata/RHSA-2026:3492
https://access.redhat.com/errata/RHSA-2026:3493
https://access.redhat.com/errata/RHSA-2026:3494
https://access.redhat.com/errata/RHSA-2026:3495
https://access.redhat.com/errata/RHSA-2026:3496
https://access.redhat.com/errata/RHSA-2026:3497
https://access.redhat.com/errata/RHSA-2026:3515
https://access.redhat.com/errata/RHSA-2026:3516
https://access.redhat.com/errata/RHSA-2026:3517
https://access.redhat.com/errata/RHSA-2026:3976
https://access.redhat.com/errata/RHSA-2026:3978
https://access.redhat.com/errata/RHSA-2026:3979
https://access.redhat.com/errata/RHSA-2026:3980
https://access.redhat.com/errata/RHSA-2026:3981
https://access.redhat.com/errata/RHSA-2026:3982
https://access.redhat.com/errata/RHSA-2026:3983
https://access.redhat.com/errata/RHSA-2026:3984
https://access.redhat.com/errata/RHSA-2026:4022
https://access.redhat.com/errata/RHSA-2026:4152
https://access.redhat.com/errata/RHSA-2026:4260
https://access.redhat.com/errata/RHSA-2026:4432
https://access.redhat.com/security/cve/CVE-2026-2792
https://bugzilla.redhat.com/show_bug.cgi?id=2442318
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2792.json
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*

History

30 Jun 2026, 03:18

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:3338 -
  • () https://access.redhat.com/errata/RHSA-2026:3339 -
  • () https://access.redhat.com/errata/RHSA-2026:3361 -
  • () https://access.redhat.com/errata/RHSA-2026:3491 -
  • () https://access.redhat.com/errata/RHSA-2026:3492 -
  • () https://access.redhat.com/errata/RHSA-2026:3493 -
  • () https://access.redhat.com/errata/RHSA-2026:3494 -
  • () https://access.redhat.com/errata/RHSA-2026:3495 -
  • () https://access.redhat.com/errata/RHSA-2026:3496 -
  • () https://access.redhat.com/errata/RHSA-2026:3497 -
  • () https://access.redhat.com/errata/RHSA-2026:3515 -
  • () https://access.redhat.com/errata/RHSA-2026:3516 -
  • () https://access.redhat.com/errata/RHSA-2026:3517 -
  • () https://access.redhat.com/errata/RHSA-2026:3976 -
  • () https://access.redhat.com/errata/RHSA-2026:3978 -
  • () https://access.redhat.com/errata/RHSA-2026:3979 -
  • () https://access.redhat.com/errata/RHSA-2026:3980 -
  • () https://access.redhat.com/errata/RHSA-2026:3981 -
  • () https://access.redhat.com/errata/RHSA-2026:3982 -
  • () https://access.redhat.com/errata/RHSA-2026:3983 -
  • () https://access.redhat.com/errata/RHSA-2026:3984 -
  • () https://access.redhat.com/errata/RHSA-2026:4022 -
  • () https://access.redhat.com/errata/RHSA-2026:4152 -
  • () https://access.redhat.com/errata/RHSA-2026:4260 -
  • () https://access.redhat.com/errata/RHSA-2026:4432 -
  • () https://access.redhat.com/security/cve/CVE-2026-2792 -
  • () https://bugzilla.redhat.com/show_bug.cgi?id=2442318 -
  • () https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2792.json -

13 Apr 2026, 15:17

Type Values Removed Values Added
Summary
  • (es) Hay errores de seguridad de memoria en Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 y Thunderbird 147. Algunos de ellos mostraban que se había producido una corrupción de memoria, y presumimos que, con suficiente esfuerzo, algunos de ellos podrían haber sido explotados para ejecutar código arbitrario. Esta vulnerabilidad afecta a Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148 y Thunderbird < 140.8.
Summary (en) Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. (en) Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

25 Feb 2026, 15:42

Type Values Removed Values Added
References () https://bugzilla.mozilla.org/buglist.cgi?bug_id=2008912%2C2010050%2C2010275%2C2012331 - () https://bugzilla.mozilla.org/buglist.cgi?bug_id=2008912%2C2010050%2C2010275%2C2012331 - Broken Link
References () https://www.mozilla.org/security/advisories/mfsa2026-13/ - () https://www.mozilla.org/security/advisories/mfsa2026-13/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2026-15/ - () https://www.mozilla.org/security/advisories/mfsa2026-15/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2026-16/ - () https://www.mozilla.org/security/advisories/mfsa2026-16/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2026-17/ - () https://www.mozilla.org/security/advisories/mfsa2026-17/ - Vendor Advisory
CPE cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
CWE CWE-787
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 9.8
First Time Mozilla
Mozilla firefox
Mozilla thunderbird

24 Feb 2026, 18:29

Type Values Removed Values Added
Summary (en) Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. (en) Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
References
  • () https://www.mozilla.org/security/advisories/mfsa2026-16/ -
  • () https://www.mozilla.org/security/advisories/mfsa2026-17/ -

24 Feb 2026, 14:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-02-24 14:16

Updated : 2026-07-15 02:19


NVD link : CVE-2026-2792

Mitre link : CVE-2026-2792

CVE.ORG link : CVE-2026-2792


JSON object : View

Products Affected

mozilla

  • firefox
  • thunderbird
CWE
CWE-787

Out-of-bounds Write