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Known vulnerabilities in Mozilla Thunderbird

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CVE Summary Score Published
CVE-2025-13020 Use-after-free in the WebRTC: Audio/Video component 8.8 High Nov 11, 2025
CVE-2025-13027 Memory safety bugs present in Firefox 144 and Thunderbird 144 8.1 High Nov 11, 2025
CVE-2025-13019 Same-origin policy bypass in the DOM: Workers component 8.1 High Nov 11, 2025
CVE-2025-13018 Mitigation bypass in the DOM: Security component 8.1 High Nov 11, 2025
CVE-2025-13017 Same-origin policy bypass in the DOM: Notifications component 8.1 High Nov 11, 2025
CVE-2025-13025 Incorrect boundary conditions in the Graphics: WebGPU component 7.5 High Nov 11, 2025
CVE-2025-13026 Sandbox escape due to incorrect boundary conditions in the Graphics: WebGPU component 9.8 Critical Nov 11, 2025
CVE-2025-13024 JIT miscompilation in the JavaScript Engine: JIT component 9.8 Critical Nov 11, 2025
CVE-2025-13016 Incorrect boundary conditions in the JavaScript: WebAssembly component 7.5 High Nov 11, 2025
CVE-2025-13023 Sandbox escape due to incorrect boundary conditions in the Graphics: WebGPU component 9.8 Critical Nov 11, 2025
CVE-2025-13022 Incorrect boundary conditions in the Graphics: WebGPU component 9.8 Critical Nov 11, 2025
CVE-2025-13021 Incorrect boundary conditions in the Graphics: WebGPU component 9.8 Critical Nov 11, 2025
CVE-2025-13015 Spoofing issue in Firefox 3.4 Low Nov 11, 2025
CVE-2025-13014 Use-after-free in the Audio/Video component 8.8 High Nov 11, 2025
CVE-2025-13013 Mitigation bypass in the DOM: Core & HTML component 6.1 Medium Nov 11, 2025
CVE-2025-13012 Race condition in the Graphics component 7.5 High Nov 11, 2025
CVE-2025-11721 Memory safety bug present in Firefox 143 and Thunderbird 143 9.8 Critical Oct 14, 2025
CVE-2025-11719 Starting in Thunderbird 143, the use of the native messaging API by web extensions on Windows could lead to crashes… 9.8 Critical Oct 14, 2025
CVE-2025-11716 Links in a sandboxed iframe could open an external app on Android without the required "allow-" permission 6.5 Medium Oct 14, 2025
CVE-2025-11715 Memory safety bugs present in Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird 143 8.8 High Oct 14, 2025
CVE-2025-11708 Use-after-free in MediaTrackGraphImpl::GetInstance() 9.8 Critical Oct 14, 2025
CVE-2025-11713 Insufficient escaping in the “Copy as cURL” feature could have been used to trick a user into executing unexpected… 8.1 High Oct 14, 2025
CVE-2025-11712 A malicious page could have used the type attribute of an OBJECT tag to override the default browser behavior when… 6.1 Medium Oct 14, 2025
CVE-2025-11711 There was a way to change the value of JavaScript Object properties that were supposed to be non-writeable 6.5 Medium Oct 14, 2025
CVE-2025-11710 A compromised web process using malicious IPC messages could have caused the privileged browser process to reveal blocks… 9.8 Critical Oct 14, 2025

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