Detections
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AlmaLinux 10 : libpng (ALSA-2026:28233)

high Nessus Plugin ID 322543

Synopsis

The remote AlmaLinux host is missing one or more security updates.

Description

The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:28233 advisory.

 * libpng: libpng: Arbitrary code execution due to use-after-free vulnerability (CVE-2026-33416)
 * libpng: libpng: Information disclosure and denial of service via out-of-bounds read/write in Neon palette expansion (CVE-2026-33636)

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

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

Solution

Update the affected libpng and / or libpng-devel packages.

See Also

https://access.redhat.com/errata/RHSA-2026:28233

https://errata.almalinux.org/10/ALSA-2026-28233.html

Plugin Details

Severity: High

ID: 322543

File Name: alma_linux_ALSA-2026-28233.nasl

Version: 1.1

Type: Local

Published: 6/24/2026

Updated: 6/24/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 7

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

CVSS Score Source: CVE-2026-33636

CVSS v3

Risk Factor: High

Base Score: 7.6

Temporal Score: 6.8

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

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

Vulnerability Information

CPE: cpe:/o:alma:linux:10::appstream, cpe:/o:alma:linux:10::sap_hana, cpe:/o:alma:linux:10, cpe:/o:alma:linux:10::nfv, p-cpe:/a:alma:linux:libpng-devel, cpe:/o:alma:linux:10::baseos, cpe:/o:alma:linux:10::supplementary, cpe:/o:alma:linux:10::sap, cpe:/o:alma:linux:10::resilientstorage, p-cpe:/a:alma:linux:libpng, cpe:/o:alma:linux:10::powertools, cpe:/o:alma:linux:10::highavailability, cpe:/o:alma:linux:10::realtime

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/AlmaLinux/release, Host/AlmaLinux/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/23/2026

Vulnerability Publication Date: 3/10/2026

Reference Information

CVE: CVE-2026-33416, CVE-2026-33636

CWE: 124, 825

RHSA: 2026:28233