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Vulnerabilities of Mozilla Thunderbird

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CVE Summary Score Published
CVE-2026-109766 Mitigation bypass in the Enterprise Policies component 8.1 High Oct 13, 2026
CVE-2026-109767 Information disclosure in the Networking component 4.3 Medium Oct 13, 2026
CVE-2026-109762 Incorrect boundary conditions in the SVG component 8.8 High Oct 13, 2026
CVE-2026-109763 Mitigation bypass in the File Handling component 5.4 Medium Oct 13, 2026
CVE-2026-109760 Mitigation bypass in the Networking: HTTP component 8.1 High Oct 13, 2026
CVE-2026-109761 Use-after-free in the JavaScript: WebAssembly component 5.4 Medium Oct 13, 2026
CVE-2026-109755 Sandbox escape in the DOM: Content Processes component 9.6 Critical Oct 13, 2026
CVE-2026-109756 Privilege escalation in the DOM: Navigation component 8.8 High Oct 13, 2026
CVE-2026-109757 Sandbox escape due to race condition in the Networking component 8.3 High Oct 13, 2026
CVE-2026-109759 Site isolation issue in the Networking component 8.1 High Oct 13, 2026
CVE-2026-109751 Information disclosure in the Networking component 4.3 Medium Oct 13, 2026
CVE-2026-109752 Use-after-free in the DOM: Workers component 5.4 Medium Oct 13, 2026
CVE-2026-109754 Incorrect boundary conditions in the DOM: Editor component 8.1 High Oct 13, 2026
CVE-2026-109748 Use-after-free in the JavaScript: WebAssembly component 5.4 Medium Oct 13, 2026
CVE-2026-109749 Use-after-free in the JavaScript: WebAssembly component 5.4 Medium Oct 13, 2026
CVE-2026-109750 Site isolation issue in the DOM: Web Authentication component 9.6 Critical Oct 13, 2026
CVE-2026-109744 Other issue in the DOM: File component 8.1 High Oct 13, 2026
CVE-2026-109745 Sandbox escape due to uninitialized memory in the DOM: Web Serial component 9.6 Critical Oct 13, 2026
CVE-2026-109746 Mitigation bypass in the DOM: Security component 7.3 High Oct 13, 2026
CVE-2026-109747 Other issue in the Address Bar component 7.3 High Oct 13, 2026
CVE-2026-109741 Use-after-free in the Storage: Bucket File System component 5.4 Medium Oct 13, 2026
CVE-2026-109742 Information disclosure in the PDF Viewer component 4.3 Medium Oct 13, 2026
CVE-2026-109743 Privilege escalation in the Panning and Zooming component 8.8 High Oct 13, 2026
CVE-2026-109740 Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component 9.6 Critical Oct 13, 2026
CVE-2026-109736 Frame poisoning in the Layout component 8.1 High Oct 13, 2026

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