CVE-2025-1016Critical· 9.8▾ MidnightMemory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 115.19, Firefox ESR 128.6, Thunderbird 115.19, and Thunderbird 128.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort …
▾ 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 Sep 30.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.6%
Last analysed / modified upstream
Memory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 115.19, Firefox ESR 128.6, Thunderbird 115.19, and Thunderbird 128.6. 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 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.
firefox < 115.20.0firefox < 135.0firefox >= 128.1.0, < 128.7.0thunderbird >= 128.0.1, < 128.7.0thunderbird >= 131.0, < 135.0Upgrade past the affected range:
firefox 128.7.0thunderbird 135.0Connected by shared product, vendor, weakness, or advisory.
CVE-2025-1017Critical· 9.8Memory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 128.6, and Thunderbird 128.6
CVE-2025-1020Critical· 9.8Memory safety bugs present in Firefox 134 and Thunderbird 134
CVE-2025-1014High· 8.8Certificate length was not properly checked when added to a certificate store
CVE-2025-1011High· 8.8A bug in WebAssembly code generation could have lead to a crash
CVE-2025-1012High· 7.5A race during concurrent delazification could have led to a use-after-free
CVE-2025-1013Medium· 6.5A race condition could have led to private browsing tabs being opened in normal browsing windows