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Known vulnerabilities in Mozilla Thunderbird

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CVE Summary Score Published
CVE-2025-11714 Memory safety bugs present in Firefox ESR 115.28, Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and… 8.8 High Oct 14, 2025
CVE-2025-11709 A compromised web process was able to trigger out of bounds reads and writes in a more privileged process using… 9.8 Critical Oct 14, 2025
CVE-2025-10534 Spoofing issue in the Site Permissions component 8.1 High Sep 16, 2025
CVE-2025-10531 Mitigation bypass in the Web Compatibility: Tooling component 5.4 Medium Sep 16, 2025
CVE-2025-10537 Memory safety bugs present in Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142 8.8 High Sep 16, 2025
CVE-2025-10530 Spoofing issue in the WebAuthn component in Firefox for Android 6.5 Medium Sep 16, 2025
CVE-2025-10536 Information disclosure in the Networking: Cache component 6.2 Medium Sep 16, 2025
CVE-2025-10532 Incorrect boundary conditions in the JavaScript: GC component 6.5 Medium Sep 16, 2025
CVE-2025-10529 Same-origin policy bypass in the Layout component 6.5 Medium Sep 16, 2025
CVE-2025-10528 Sandbox escape due to undefined behavior, invalid pointer in the Graphics: Canvas2D component 7.3 High Sep 16, 2025
CVE-2025-10527 Sandbox escape due to use-after-free in the Graphics: Canvas2D component 7.1 High Sep 16, 2025
CVE-2025-10533 Integer overflow in the SVG component 8.8 High Sep 16, 2025
CVE-2025-9184 Memory safety bugs present in Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141 8.1 High Aug 19, 2025
CVE-2025-9187 Memory safety bugs present in Firefox 141 and Thunderbird 141 9.8 Critical Aug 19, 2025
CVE-2025-9182 Denial-of-service due to out-of-memory in the Graphics: WebRender component 7.5 High Aug 19, 2025
CVE-2025-9181 Uninitialized memory in the JavaScript Engine component 6.5 Medium Aug 19, 2025
CVE-2025-9185 Memory safety bugs present in Firefox ESR 115.26, Firefox ESR 128.13, Thunderbird ESR 128.13, Firefox ESR 140.1,… 8.1 High Aug 19, 2025
CVE-2025-9180 Same-origin policy bypass in the Graphics: Canvas2D component 8.1 High Aug 19, 2025
CVE-2025-9179 An attacker was able to perform memory corruption in the GMP process which processes encrypted media 9.8 Critical Aug 19, 2025
CVE-2025-8044 Memory safety bugs present in Firefox 140 and Thunderbird 140 9.8 Critical Jul 22, 2025
CVE-2025-8035 Memory safety bugs present in Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0, Thunderbird ESR 140.0,… 8.8 High Jul 22, 2025
CVE-2025-8043 Focus incorrectly truncated URLs towards the beginning instead of around the origin 9.8 Critical Jul 22, 2025
CVE-2025-8040 Memory safety bugs present in Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140 and Thunderbird 140 8.8 High Jul 22, 2025
CVE-2025-8034 Memory safety bugs present in Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0,… 8.8 High Jul 22, 2025
CVE-2025-8033 The JavaScript engine did not handle closed generators correctly and it was possible to resume them leading to a nullptr… 6.5 Medium Jul 22, 2025

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