Alerts This Week
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Alerts This Week
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Debian 11 DLA-4511-1 Thunderbird Important Security Update for Code Exec

debian lts
Calendar Grey March 26, 2026
Dist Debian Esm H88
Multiple security issues found in Thunderbird could allow code execution or info leakage. Upgrade your Debian packages.
Multiple security issues were discovered in Thunderbird, which could result in the execution of arbitrary code or information disclosure
Topics%20covered

Topics Covered

security advisory debian important arbitrary code information disclosure thunderbird

Summary

For Debian 11 bullseye, these problems have been fixed in version
1:140.9.0esr-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: 1:140.9.0esr-1~deb11u1
CVE ID: CVE-2025-59375 CVE-2026-3889 CVE-2026-4371 CVE-2026-4684

Topics%20covered

Topics Covered

security advisory debian important arbitrary code information disclosure thunderbird

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