CVE-2026-8954

HIGH EPSS 34.1%
Published May 19, 20261mo ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published May 19, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

Incorrect boundary conditions, integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
34.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Memory Safety

Affected Products 3

VendorProductVersionRange
mozillafirefox* <140.11.0
mozillafirefox* <151.0.0
mozillathunderbird* <140.11

References 5

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=2030747
    Permissions Required
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2026-46/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2026-48/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2026-50/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2026-51/
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.