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-2026-12330 json Incorrect boundary conditions in the Internationalization component. This vulnerability was fixed in Firefox ESR 140.12, Fire... Not Provided 2026-06-16 2026-06-16
CVE-2026-12329 json Memory safety bug fixed in Thunderbird ESR 140.12. This vulnerability was fixed in Firefox ESR 140.12 and Thunderbird 140.12. Not Provided 2026-06-16 2026-06-16
CVE-2026-12328 json Memory safety bugs present in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151... Not Provided 2026-06-16 2026-06-16
CVE-2026-12327 json Memory safety bugs present in Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. Some of these bugs... Not Provided 2026-06-16 2026-06-16
CVE-2026-12326 json Memory safety bugs present in Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we... Not Provided 2026-06-16 2026-06-16
CVE-2026-12325 json Denial-of-service in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firef... Not Provided 2026-06-16 2026-06-16
CVE-2026-12324 json Incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 152, Firefox ES... Not Provided 2026-06-16 2026-06-16
CVE-2026-12323 json Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 152 and Thunderbird 152. Not Provided 2026-06-16 2026-06-16
CVE-2026-12322 json Clickjacking issue in the Widget: Gtk component. This vulnerability was fixed in Firefox 152 and Thunderbird 152. Not Provided 2026-06-16 2026-06-16
CVE-2026-12321 json JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152 and Thunderbird 152. Not Provided 2026-06-16 2026-06-16
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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