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Alerts This Week
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Debian DSA-6211-1 Thunderbird Important Exec Code Security Risk

debian
Calendar Grey April 14, 2026
Debian Logo
Arbitrary code execution risks in Thunderbird require urgent updates for Debian users. Check latest fixes and advisories.
Multiple security issues were discovered in Thunderbird, which could result in the execution of arbitrary code
Topics%20covered

Topics Covered

security advisory debian arbitrary code execution important thunderbird dsa-6211-1

Summary

For the oldstable distribution (bookworm), these problems have been fixed
in version 1:140.9.1esr-1~deb12u1.

For the stable distribution (trixie), these problems have been fixed in
version 1:140.9.1esr-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/source-package/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
important
Lowest
Low
Medium
High
Critical

Package: thunderbird
CVE ID: CVE-2026-5731 CVE-2026-5732 CVE-2026-5734

Topics%20covered

Topics Covered

security advisory debian arbitrary code execution important thunderbird dsa-6211-1

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