CVE-2026-8091Critical· 9.8▾ MidnightIncorrect boundary conditions in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150, Thunderbird 150, Firefox ESR 140.10.1, Thunderbird 140.10.1, and Firefox ESR 115.35.2.
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 53.9 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 22.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.4%
0.4% → 0.5%
Incorrect boundary conditions in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150, Thunderbird 150, Firefox ESR 140.10.1, Thunderbird 140.10.1, and Firefox ESR 115.35.2.
firefox < 115.35.2firefox >= 140.0, < 140.10.1thunderbird >= 140.0, < 140.10.1Upgrade past the affected range:
firefox 140.10.1thunderbird 140.10.1Connected by shared product, vendor, weakness, or advisory.
CVE-2026-8094Critical· 9.8Other issue in the WebRTC component
CVE-2026-8092High· 8.1Memory safety bugs present in Firefox ESR 115.35.1, Firefox ESR 140.10.1 and Firefox 150.0.1
CVE-2026-8090High· 7.3Use-after-free in the DOM: Networking component
CVE-2026-8975High· 8.8Memory safety bugs present in Firefox ESR 115.35, Firefox ESR 140.10 and Firefox 150
CVE-2026-8946High· 7.5Incorrect boundary conditions in the Audio/Video: Web Codecs component
CVE-2026-74961Critical· 9.1Side-channel in the Web Audio component