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Alerts This Week
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Debian 11 Firewalld Important Unauthorized Access DLA-4585-1 CVE-2026-4948

debian lts
Calendar Grey May 15, 2026
Dist Debian Esm H88
A flaw in firewalld allows unauthorized changes to firewall settings by unprivileged users. Update recommended for Debian 11.
A flaw was found in firewalld where a local unprivileged user can modify the runtime firewall state without proper authentication, leading to unauthorized changes in network securi...
Topics%20covered

Topics Covered

security advisory network security unauthorized access debian important firewalld

Summary

For Debian 11 bullseye, this problem has been fixed in version
0.9.3-2+deb11u1.

We recommend that you upgrade your firewalld packages.

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

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: firewalld
Version: 0.9.3-2+deb11u1
CVE ID: CVE-2026-4948
Debian Bug:

Topics%20covered

Topics Covered

security advisory network security unauthorized access debian important firewalld

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