Debian dsa-6263 : libpng-dev - security update

medium Nessus Plugin ID 313712

Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 12 / 13 host has packages installed that are affected by a vulnerability as referenced in the dsa-6263 advisory.

- ------------------------------------------------------------------------- Debian Security Advisory DSA-6263-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff May 10, 2026 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : libpng1.6 CVE ID : CVE-2026-34757

A use-after-free was discovered in libpng, a library implementing an interface for reading and writing PNG (Portable Network Graphics) files.

For the oldstable distribution (bookworm), this problem has been fixed in version 1.6.39-2+deb12u5.

For the stable distribution (trixie), this problem has been fixed in version 1.6.48-1+deb13u5.

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 Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/

Mailing list: [email protected]

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the libpng-dev packages.

Plugin Details

Severity: Medium

ID: 313712

File Name: debian_DSA-6263.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 5/10/2026

Updated: 5/10/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.0

CVSS v2

Risk Factor: Low

Base Score: 3.6

Temporal Score: 2.7

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2026-34757

CVSS v3

Risk Factor: Medium

Base Score: 5.1

Temporal Score: 4.5

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libpng16-16-udeb, p-cpe:/a:debian:debian_linux:libpng-tools, p-cpe:/a:debian:debian_linux:libpng16-16, p-cpe:/a:debian:debian_linux:libpng-dev, p-cpe:/a:debian:debian_linux:libpng16-16t64, cpe:/o:debian:debian_linux:12.0, cpe:/o:debian:debian_linux:13.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 5/10/2026

Vulnerability Publication Date: 4/9/2026

Reference Information

CVE: CVE-2026-34757

Detections

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