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Debian exim4 Important Denial of Service Remote Code Execution DSA-6265-1

debian
Calendar Grey May 12, 2026
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Explore the Exim4 security advisory detailing several critical vulnerabilities fixed in Debian's oldstable and stable releases.
Several vulnerabilities were discovered in the Exim mail transport agent, which may result in remote code execution, denial of service or an information leak
Topics%20covered

Topics Covered

security advisory denial of service information leak remote code execution debian important

Summary

For the oldstable distribution (bookworm), these problems have been fixed
in version 4.96-15+deb12u9.

For the stable distribution (trixie), these problems have been fixed in
version 4.98.2-1+deb13u2.

We recommend that you upgrade your exim4 packages.

For the detailed security status of exim4 please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/exim4

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: exim4
CVE ID: CVE-2026-40684 CVE-2026-40685 CVE-2026-40686 CVE-2026-40687

Topics%20covered

Topics Covered

security advisory denial of service information leak remote code execution debian important

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