Known Vulnerabilities for Thunderbird by Mozilla

Listed below are 10 of the newest known vulnerabilities associated with "Thunderbird" by "Mozilla".

These CVEs are retrieved based on exact matches on listed software, hardware, and vendor information (CPE data) as well as a keyword search to ensure the newest vulnerabilities with no officially listed software information are still displayed.

Data on known vulnerable versions is also displayed based on information from known CPEs

Known Vulnerabilities

CVE Shortened Description Severity Publish Date Last Modified
CVE-2026-110249 json A malicious, compromised, or MITM-controlled Exchange server can return a single well-formed SOAP response containing an elem... Not Provided 2026-10-13 2026-10-13
CVE-2026-110247 json Several buffer-growth sites in libmime performed size arithmetic in 32-bit types without overflow checks. On a sufficiently l... Not Provided 2026-10-13 2026-10-13
CVE-2026-109783 json Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox ESR 153.5 and Thunderbird 153.5. Not Provided 2026-10-13 2026-10-13
CVE-2026-109782 json Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox ESR 153.5 and Thunderbird 153.5. Not Provided 2026-10-13 2026-10-13
CVE-2026-109781 json Denial-of-service in the Printing: Output component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderb... Not Provided 2026-10-13 2026-10-13
CVE-2026-109780 json Mitigation bypass in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 158 and Thunderbird 158. Not Provided 2026-10-13 2026-10-13
CVE-2026-109779 json Race condition in the Networking: DNS component. This vulnerability was fixed in Firefox 158 and Thunderbird 158. Not Provided 2026-10-13 2026-10-13
CVE-2026-109778 json Privilege escalation in the WebExtensions component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderb... Not Provided 2026-10-13 2026-10-14
CVE-2026-109777 json Information disclosure in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, T... Not Provided 2026-10-13 2026-10-13
CVE-2026-109776 json Race condition in the XPCOM component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and T... Not Provided 2026-10-13 2026-10-15
Results limited to 10 most recent vulnerabilities

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationMozillaThunderbird9.0.1
ApplicationMozillaThunderbird9.0
ApplicationMozillaThunderbird9.0
ApplicationMozillaThunderbird9.0
ApplicationMozillaThunderbird9.0
ApplicationMozillaThunderbird9.0
ApplicationMozillaThunderbird9.0
ApplicationMozillaThunderbird8.0
ApplicationMozillaThunderbird8.0
ApplicationMozillaThunderbird8.0
ApplicationMozillaThunderbird8.0
ApplicationMozillaThunderbird8.0
ApplicationMozillaThunderbird8.0
ApplicationMozillaThunderbird78.6.0
ApplicationMozillaThunderbird78.5.1
ApplicationMozillaThunderbird78.4.0
ApplicationMozillaThunderbird78.3
ApplicationMozillaThunderbird78.2
ApplicationMozillaThunderbird78.1.1
ApplicationMozillaThunderbird78.1.0
Results limited to 20 most recent known configurations

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