CVE-2026-100783
MEDIUM severity · CVSS 4.3 · CWE-457
4.3CVSS MEDIUM
Summary
Uninitialized memory in the Audio/Video component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
Confidentiality impactNone
Integrity impactNone
Availability impactLow
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Affected products we track (2)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://www.mozilla.org/security/advisories/mfsa2026-100/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-101/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-102/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-103/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-97/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-98/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-99/Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=2069804