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-2026-113869 json When Thunderbird asked for a security device password (for example a smartcard PIN or the Primary Password) while decrypting ... Not Provided 2026-10-20 2026-10-20
CVE-2026-113868 json When authenticating to a POP3 or SMTP server using NTLM, Thunderbird did not check whether the server's challenge was valid b... Not Provided 2026-10-20 2026-10-20
CVE-2026-113867 json Thunderbird did not escape attribute values when serializing outgoing XMPP stanzas. Because values from incoming requests wer... Not Provided 2026-10-20 2026-10-20
CVE-2026-113866 json When setting up an account, Thunderbird's Exchange AutoDiscover lookup also queried the domain's AutoDiscover service over pl... Not Provided 2026-10-20 2026-10-20
CVE-2026-113470 json Cryptographic issue in the Security Block-lists, Allow-lists, and other State component. This vulnerability was fixed in Fire... Not Provided 2026-10-20 2026-10-21
CVE-2026-113401 json Denial-of-service in the PDF Viewer component. This vulnerability was fixed in Firefox 158.0.1 and Thunderbird 158.0.1. Not Provided 2026-10-20 2026-10-20
CVE-2026-113400 json Uninitialized memory in the Audio/Video: cubeb component. This vulnerability was fixed in Firefox 158.0.1 and Thunderbird 158... Not Provided 2026-10-20 2026-10-20
CVE-2026-113399 json Incorrect boundary conditions in the SVG component. This vulnerability was fixed in Firefox 158.0.1 and Thunderbird 158.0.1. Not Provided 2026-10-20 2026-10-20
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 2026-10-20
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 2026-10-20
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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