CVE-2025-8034High· 8.8▾ TwilightMemory safety bugs present in Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140 and Thunderbird 140. Some of these bugs showed evidence of memory corruption and we presu…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0.1 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.4%
Memory safety bugs present in Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140 and Thunderbird 140. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.
firefox < 115.26.0firefox < 141.0firefox >= 128.0, < 128.13.0firefox >= 140.0, < 140.1.0thunderbird < 128.13.0thunderbird < 141.0thunderbird >= 140.0, < 140.1.0Upgrade past the affected range:
firefox 140.1.0thunderbird 140.1.0Connected by shared product, vendor, weakness, or advisory.
CVE-2026-100819Critical· 9.6Sandbox escape due to incorrect boundary conditions in the XPCOM component
CVE-2026-100814High· 8.8Incorrect boundary conditions in the JavaScript Engine: JIT component
CVE-2026-100782High· 8.8Privilege escalation due to incorrect boundary conditions in the Graphics component
CVE-2026-100764High· 8.8Privilege escalation due to incorrect boundary conditions in the Graphics: WebGPU component
CVE-2026-100756High· 8.1Incorrect boundary conditions in the Audio/Video: Playback component
CVE-2026-92076High· 8.8Incorrect boundary conditions in the Networking component