CVE-2026-2447High· 8.8▾ TwilightHeap buffer overflow in libvpx. This vulnerability was fixed in Firefox 147.0.4, Firefox ESR 140.7.1, Firefox ESR 115.32.1, Thunderbird 140.7.2, and Thunderbird 147.0.2.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 3.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.6%
0.6% → 0.6%
Heap buffer overflow in libvpx. This vulnerability was fixed in Firefox 147.0.4, Firefox ESR 140.7.1, Firefox ESR 115.32.1, Thunderbird 140.7.2, and Thunderbird 147.0.2.
firefox < 115.32.1firefox < 147.0.4firefox >= 116.0, < 140.7.1thunderbird < 140.7.2thunderbird >= 141.0, < 147.0.2Upgrade past the affected range:
firefox 140.7.1thunderbird 147.0.2Connected by shared product, vendor, weakness, or advisory.
CVE-2026-56208High· 7.6A heap buffer overflow vulnerability was found in libaom, the reference AV1 codec implementation
CVE-2026-74961Critical· 9.1Side-channel in the Web Audio component
CVE-2026-74983High· 8.1Mitigation bypass in the Data Loss Prevention component
CVE-2026-92079Low· 3.4Mitigation bypass in the Widget: Win32 component
CVE-2026-92078Medium· 6.5Denial-of-service in the Security component
CVE-2026-92077Medium· 6.5Denial-of-service in the SVG component