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CVE-2025-66293

LIBPNG has an out-of-bounds read in png_image_read_composite

Published: Dec 3, 2025Updated: Dec 16, 2025 Sources: CVE List NVD BDUCWE-125
NVD MITRE
7.1CVSSHIGH
EPSS Score
0.3%
Top 79.2%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
Patch Available

Description

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to 1.6.52, an out-of-bounds read vulnerability in libpng's simplified API allows reading up to 1012 bytes beyond the png_sRGB_base[512] array when processing valid palette PNG images with partial transparency and gamma correction. The PNG files that trigger this vulnerability are valid per the PNG specification; the bug is in libpng's internal state management. Upgrade to libpng 1.6.52 or later.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:LI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-125

Affected Products

libpnglibpng
Library
OSS Libraries / generic-library
Red Hat Enterprise LinuxRed Hat Inc.
On-premOS
Operating Systems / linux-distro
Suse Linux Enterprise DesktopNovell Inc.
On-premOS
Operating Systems / linux-distro
SUSE Linux Enterprise Server for SAP ApplicationsNovell Inc.
On-premOS
Operating Systems / linux-distro
OpenSUSE LeapNovell Inc.
On-premOS
Operating Systems / linux-distro
libpngoss-projectOSS Librariesaka libpng project, pngcheck (related tool)
red hat inc.commercialUSOperating Systemsaka red hat
novell inc.commercialUSOperating Systems
and 15 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://github.com/pnggroup/libpng/commit/788a624d7387a758ffd5c7ab010f1870dea753a1
github.com
https://github.com/pnggroup/libpng/commit/a05a48b756de63e3234ea6b3b938b8f5f862484a
github.com
https://github.com/pnggroup/libpng/issues/764
github.com
and 24 more references View all →

Timeline

Published
Dec 3, 2025
Last Updated
Dec 16, 2025

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