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Debian Thunderbird Critical Issues Advisory DSA-6351-1 CVE-2026-12289-12330

debian
Calendar Grey June 18, 2026
Debian Logo
Debian advisory DSA-6351-1 addresses multiple security issues in Thunderbird, ensuring safe package execution.
Multiple security issues were discovered in Thunderbird, which could result in the execution of arbitrary code
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Topics Covered

security advisory critical debian arbitrary code execution thunderbird

Summary

For the stable distribution (trixie), these problems have been fixed in
version 1:140.12.0esr-1~deb13u1.

We recommend that you upgrade your thunderbird packages.

For the detailed security status of thunderbird please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/thunderbird

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/



Severity
critical
Lowest
Low
Medium
High
Critical

Package: thunderbird
CVE ID: CVE-2026-12289 CVE-2026-12290 CVE-2026-12291 CVE-2026-12292

Topics%20covered

Topics Covered

security advisory critical debian arbitrary code execution thunderbird

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