Debian 11 DLA-4537-1 Mapserver Critical Heap Buffer Overflow DoS
debian lts
April 17, 2026
A heap-buffer-overflow was found in mapserver, a CGI-based framework for Internet map services, which could lead to Denial of Service via crafted SLD (Styled Layer Descriptor) sent...
Topics Covered
Summary
For Debian 11 bullseye, this problem has been fixed in version
7.6.2-1+deb11u2.
We recommend that you upgrade your mapserver packages.
For the detailed security status of mapserver please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/mapserver
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
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Package: mapserver
Version: 7.6.2-1+deb11u2
CVE ID: CVE-2026-33721
Topics Covered
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