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thunderbird vulnerabilities · Page 13

Vulnerabilities published for thunderbird in the last 30 days: 107. Listed in the KEV catalogue: 0.

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Vulnerabilities: 1152

  1. CVE-2026-8975

    High · CVSS 8.8EPSS 0.47%Fix available

    Memory safety bugs fixed in Thunderbird 140.11 and Thunderbird 151

    Memory safety bugs present in Thunderbird 140.10 and Thunderbird 150. 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 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

    • Update to 1:140.11.0esr-1~deb13u1
    Published Updated
  2. CVE-2026-8974

    High · CVSS 8.8EPSS 0.36%Fix available

    Memory safety bugs fixed in Thunderbird 140.11 and Thunderbird 151

    Memory safety bugs present in Thunderbird 140.10 and Thunderbird 150. 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 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

    • Update to 1:140.11.0esr-1~deb13u1
    Published Updated
  3. CVE-2026-8953

    Critical · CVSS 9.6EPSS 0.53%Fix available

    Sandbox escape due to use-after-free in the Disability Access APIs component

    Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

    • Update to 1:140.11.0esr-1~deb13u1
    Published Updated

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