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Alerts This Week
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Debian 11 DLA-4573-1 libpng Important Heap Disclosure Fix

debian lts
Calendar Grey May 9, 2026
Dist Debian Esm H88
Discover a critical libpng security advisory for Debian 11 leading to potential heap data exposure. Upgrade recommended.
A security vulnerability has been discovered in libpng, a library implementing an interface for reading and writing PNG (Portable Network Graphics) files, which could leading to co...
Topics%20covered

Topics Covered

security advisory software update debian important libpng heap disclosure

Summary

For Debian 11 bullseye, this problem has been fixed in version
1.6.37-3+deb11u4.

We recommend that you upgrade your libpng1.6 packages.

For the detailed security status of libpng1.6 please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/libpng1.6

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: libpng1.6
Version: 1.6.37-3+deb11u4
CVE ID: CVE-2026-34757
Debian Bug: 1133051

Topics%20covered

Topics Covered

security advisory software update debian important libpng heap disclosure

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