CVE-2025-9187Critical· 9.8▾ MidnightMemory safety bugs present in Firefox 141 and Thunderbird 141. 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 vulnerabili…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 53.9 · 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
0.5%
Memory safety bugs present in Firefox 141 and Thunderbird 141. 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 142 and Thunderbird 142.
firefox < 142.0thunderbird < 142.0Upgrade past the affected range:
firefox 142.0thunderbird 142.0Connected 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