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thunderbird vulnerabilities · Page 6

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

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Vulnerabilities: 1152

  1. CVE-2026-100766

    Medium · CVSS 4.3EPSS 0.25%Fix available

    Information disclosure in the Networking: JAR component

    Information disclosure in the Networking: JAR 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 1:140.17.0esr-1~deb13u1
    Published Updated
  2. CVE-2026-100762

    Critical · CVSS 9.6EPSS 0.32%Fix available

    Sandbox escape due to use-after-free in the DOM: Content Processes component

    Sandbox escape due to use-after-free in the DOM: Content Processes 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 1:140.17.0esr-1~deb13u1
    Published Updated
  3. CVE-2026-100759

    High · CVSS 8.1EPSS 0.31%Fix available

    Uninitialized memory in the Storage: Quota Manager component

    Uninitialized memory in the Storage: Quota Manager 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 1:140.17.0esr-1~deb13u1
    Published Updated
  4. CVE-2026-100756

    High · CVSS 8.1EPSS 0.31%Fix available

    Incorrect boundary conditions in the Audio/Video: Playback component

    Incorrect boundary conditions in the Audio/Video: Playback 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 1:140.17.0esr-1~deb13u1
    Published Updated
  5. CVE-2026-92240

    Critical · CVSS 9.1EPSS 0.63%Fix available

    Out-of-bounds read in IMAP response parser

    A malicious or compromised IMAP server can trigger an out-of-bounds read in the IMAP response parser by sending an untagged '* ID' response, crashing Thunderbird. The affected parsing path is reachable before authentication. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.

    • Update to 1:140.16.0esr-1~deb13u1
    Published Updated
  6. CVE-2026-92035

    Critical · CVSS 9.6EPSS 0.33%Fix available

    Sandbox escape due to incorrect boundary conditions in the Graphics component

    Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Thunderbird 140.17, Firefox 156, Firefox ESR 153.3, Thunderbird 156, Thunderbird 153.3, Firefox ESR 115.42, and Firefox ESR 140.17.

    • Update to 1:140.17.0esr-1~deb13u1
    Published Updated
  7. CVE-2026-92032

    Critical · CVSS 9.6EPSS 0.32%Fix available

    Sandbox escape due to invalid pointer in the Graphics component

    Sandbox escape due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.

    • Update to 1:140.16.0esr-1~deb13u1
    Published Updated
  8. CVE-2026-92030

    Medium · CVSS 5.4EPSS 0.22%Fix available

    Mitigation bypass in the DOM: Copy & Paste and Drag & Drop component

    Mitigation bypass in the DOM: Copy & Paste and Drag & Drop component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.

    • Update to 1:140.16.0esr-1~deb13u1
    Published Updated

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