CVE-2026-2774

Integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
References
Link Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=2014883 Issue Tracking Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-13/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-14/ 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-2026-2774
https://bugzilla.redhat.com/show_bug.cgi?id=2442290
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2774.json
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
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-2026-2774 -
  • () https://bugzilla.redhat.com/show_bug.cgi?id=2442290 -
  • () https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2774.json -

13 Apr 2026, 15:17

Type Values Removed Values Added
Summary
  • (es) Desbordamiento de entero en el componente de Audio/Video. Esta vulnerabilidad afecta a Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, y Thunderbird < 140.8.
Summary (en) Integer overflow in the Audio/Video component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. (en) Integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

25 Feb 2026, 16:27

Type Values Removed Values Added
First Time Mozilla
Mozilla firefox
Mozilla thunderbird
References () https://bugzilla.mozilla.org/show_bug.cgi?id=2014883 - () https://bugzilla.mozilla.org/show_bug.cgi?id=2014883 - Issue Tracking, Permissions Required
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/mfsa2026-14/ - () https://www.mozilla.org/security/advisories/mfsa2026-14/ - 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
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 9.8
CWE CWE-190
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:*:*:*

24 Feb 2026, 18:29

Type Values Removed Values Added
Summary (en) Integer overflow in the Audio/Video component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (en) Integer overflow in the Audio/Video component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, 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-2026-2774

Mitre link : CVE-2026-2774

CVE.ORG link : CVE-2026-2774


JSON object : View

Products Affected

mozilla

  • firefox
  • thunderbird
CWE
CWE-190

Integer Overflow or Wraparound