CVE-2025-3030High· 8.1▾ TwilightMemory safety bugs present in Firefox 136, Thunderbird 136, Firefox ESR 128.8, and Thunderbird 128.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited …
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 44.6 · 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
0.5%
Last analysed / modified upstream
0.5% → 0.5%
Memory safety bugs present in Firefox 136, Thunderbird 136, Firefox ESR 128.8, and Thunderbird 128.8. 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 137, Firefox ESR 128.9, Thunderbird 137, and Thunderbird 128.9.
firefox < 128.8.0firefox < 136.0thunderbird < 128.8.0thunderbird >= 129.0, < 136.0Upgrade past the affected range:
firefox 136.0thunderbird 136.0Connected by shared product, vendor, weakness, or advisory.
CVE-2025-3028Medium· 6.5JavaScript code running while transforming a document with the XSLTProcessor could lead to a use-after-free
CVE-2025-3029High· 7.3A crafted URL containing specific Unicode characters could have hidden the true origin of the page, resulting in a potential spoofing attack
CVE-2025-3033High· 7.7After selecting a malicious Windows `.url` shortcut from the local filesystem, an unexpected file could be uploaded
CVE-2025-3034High· 8.1Memory safety bugs present in Firefox 136 and Thunderbird 136
CVE-2025-3031Medium· 6.5An attacker could read 32 bits of values spilled onto the stack in a JIT compiled function
CVE-2025-3032High· 7.4Leaking of file descriptors from the fork server to web content processes could allow for privilege escalation attacks