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firefox-esr vulnerabilities · Page 24

Vulnerabilities published for firefox-esr in the last 30 days: 206. Listed in the KEV catalogue: 0.

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Vulnerabilities: 1349

  1. CVE-2026-4690

    Critical · CVSS 9.6EPSS 0.8%Fix available

    Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component

    Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

    • Update to 140.9.0esr-1
    Published Updated

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