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firefox-esr vulnerabilities · Page 22

Vulnerabilities published for firefox-esr in the last 30 days: 268. Listed in the KEV catalogue: 0.

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Vulnerabilities: 1358

  1. CVE-2026-7321

    Critical · CVSS 9.6EPSS 0.26%Fix available

    Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component

    Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150, Thunderbird 150, Firefox ESR 140.10.1, and Thunderbird 140.10.1.

    • Update to 140.10.1esr-1~deb13u1
    Published Updated
  2. CVE-2026-7323

    High · CVSS 7.3EPSS 0.38%Fix available

    Memory safety bugs fixed in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1

    Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. 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 150.0.1, Firefox ESR 140.10.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.

    • Update to 140.10.1esr-1~deb13u1
    Published Updated
  3. CVE-2026-7322

    High · CVSS 7.3EPSS 0.32%Fix available

    Memory safety bugs fixed in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1

    Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. 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 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.

    • Update to 140.10.1esr-1~deb13u1
    Published Updated
  4. CVE-2026-7320

    High · CVSS 7.5EPSS 0.32%Fix available

    Information disclosure due to incorrect boundary conditions in the Audio/Video component

    Information disclosure due to incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.

    • Update to 140.10.1esr-1~deb13u1
    Published Updated
  5. CVE-2026-6786

    High · CVSS 7.5EPSS 0.5%Fix available

    Memory safety bugs fixed in Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150

    Memory safety bugs present in Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149. 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 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

    • Update to 140.10.0esr-1~deb13u1
    Published Updated
  6. CVE-2026-6785

    High · CVSS 7.5EPSS 0.51%Fix available

    Memory safety bugs fixed in Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150

    Memory safety bugs present in Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149. 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 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

    • Update to 140.10.0esr-1~deb13u1
    Published Updated

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