VDB
CVE-2026-8954
CVE-2026-8954
PUBLISHED
CVSS 9.300000190734863 CRITICAL
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.
EPSS 0.04% · 14.0th percentile
Risk Scores
CVSS v4.0
9.300000190734863
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS Score
0.04%
14.0th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| mozilla | thunderbird | 0 |
| Mozilla | Firefox | 151, 140.11 |
| mozilla | firefox | 0, 0 |
| Mozilla | Thunderbird | 151, 140.11 |
Timeline
- May 19, 2026 CVE Published
- May 19, 2026 CVE Updated
- May 20, 2026 EPSS Score
- May 20, 2026 Coalition ESS Score
- May 20, 2026 Security Advisory
- May 21, 2026 EPSS Score
- May 22, 2026 EPSS Score
- May 23, 2026 EPSS Score
- May 24, 2026 EPSS Score
- May 25, 2026 EPSS Score
- May 26, 2026 EPSS Score
- May 27, 2026 EPSS Score
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2030747 url
- https://www.mozilla.org/security/advisories/mfsa2026-46/ url
- https://www.mozilla.org/security/advisories/mfsa2026-48/ url
- https://www.mozilla.org/security/advisories/mfsa2026-50/ url
- https://www.mozilla.org/security/advisories/mfsa2026-51/ url
- https://nvd.nist.gov/vuln/detail/CVE-2026-8954 advisory
- https://www.mozilla.org/security/advisories/mfsa2026-46 url
- https://www.mozilla.org/security/advisories/mfsa2026-48 url
- https://www.mozilla.org/security/advisories/mfsa2026-50 url
- https://www.mozilla.org/security/advisories/mfsa2026-51 url