Alerts This Week
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Alerts This Week
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Debian 11 Thunderbird Important Exec Code Issues DLA-4534-1 CVE-2026-5731

debian lts
Calendar Grey April 16, 2026
Dist Debian Esm H88
Multiple security issues in Thunderbird for Debian LTS 11 can lead to code execution. Upgrade to version 1:140.9.1esr-1~deb11u1 now.
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 dla-4534-1

Summary

For Debian 11 bullseye, these problems have been fixed in version
1:140.9.1esr-1~deb11u1.

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 LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS


Severity
important
Lowest
Low
Medium
High
Critical

Package: thunderbird
Version: 1:140.9.1esr-1~deb11u1
CVE ID: CVE-2026-5731 CVE-2026-5732 CVE-2026-5734

Topics%20covered

Topics Covered

security advisory debian arbitrary code execution important thunderbird dla-4534-1

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