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thunderbird vulnerabilities · Page 19

Vulnerabilities published for thunderbird in the last 30 days: 258. Listed in the KEV catalogue: 0.

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Vulnerabilities: 1303

  1. CVE-2026-16352

    Critical · CVSS 9.8EPSS 0.58%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 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

    • Update to 1:140.13.0esr-2~deb13u1
    Published Updated
  2. CVE-2026-15719

    Medium · CVSS 5.4EPSS 0.29%Fix available

    Site isolation issue in the DOM: Navigation component

    We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 115.38, Firefox ESR 140.13, and Thunderbird 140.13.

    • Update to 1:140.13.0esr-2~deb13u1
    Published Updated
  3. CVE-2026-57962

    Medium · CVSS 5.3EPSS 0.34%Fix available

    Denial-of-service via malicious LDAP address-book server

    A malicious LDAP server, which a Thunderbird user is configured to query for address-book autocomplete, can stash arbitrarily large amounts of attacker-supplied data into the Thunderbird LDAP client until it crashes due to memory exhaustion. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.

    • Update to 1:140.13.0esr-2~deb13u1
    Published Updated
  4. CVE-2026-12328

    High · CVSS 8.1EPSS 0.48%Fix available

    Memory safety bugs fixed in Firefox ESR 115.37, Firefox ESR 140.12, Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152

    Memory safety bugs present in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. 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 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.

    • Update to 1:140.12.0esr-1~deb13u1
    Published Updated
  5. CVE-2026-12327

    High · CVSS 8.1EPSS 0.41%Fix available

    Memory safety bugs fixed in Firefox ESR 140.12, Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152

    Memory safety bugs present in Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. 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 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

    • Update to 1:140.12.0esr-1~deb13u1
    Published Updated

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