CVE-2025-0237Medium· 5.4▾ SunlitThe WebChannel API, which is used to transport various information across processes, did not check the sending principal but rather accepted the principal being sent. This could have led to privilege escalation attacks. This vulnerabilit…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 29.7 · 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
The WebChannel API, which is used to transport various information across processes, did not check the sending principal but rather accepted the principal being sent. This could have led to privilege escalation attacks. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.
firefox < 128.6.0firefox < 134.0thunderbird < 128.6.0thunderbird >= 129.0, < 134.0Upgrade past the affected range:
firefox 134.0thunderbird 134.0Connected by shared product, vendor, weakness, or advisory.
CVE-2025-0242Medium· 6.5Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 115.18, Firefox ESR 128.5, Thunderbird 115.18, and Thunderbird 128.5
CVE-2025-0243Medium· 5.1Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 128.5, and Thunderbird 128.5
CVE-2025-0239Medium· 4.0When using Alt-Svc, ALPN did not properly validate certificates when the original server is redirecting to an insecure site
CVE-2025-0240Medium· 4.0Parsing a JavaScript module as JSON could, under some circumstances, cause cross-compartment access, which may result in a use-after-free
CVE-2025-0241High· 7.7When segmenting specially crafted text, segmentation would corrupt memory leading to a potentially exploitable crash
CVE-2025-0238Medium· 5.3Assuming a controlled failed memory allocation, an attacker could have caused a use-after-free, leading to a potentially exploitable crash