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firefox-esr vulnerabilities · Page 11

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-2026-100819

    Critical · CVSS 9.6EPSS 0.26%Fix available

    Sandbox escape due to incorrect boundary conditions in the XPCOM component

    Sandbox escape due to incorrect boundary conditions in the XPCOM component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.

    • Update to 153.4.0esr-1
    Published Updated

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