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CVE-2025-64720

LIBPNG is vulnerable to a buffer overflow in `png_image_read_composite` via incorrect palette premultiplication

Published: Nov 24, 2025Updated: Nov 26, 2025 Sources: CVE List NVD BDUCWE-125
NVD MITRE
7.1CVSSHIGH
EPSS Score
0.3%
Top 82.5%
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. From version 1.6.0 to before 1.6.51, an out-of-bounds read vulnerability exists in png_image_read_composite when processing palette images with PNG_FLAG_OPTIMIZE_ALPHA enabled. The palette compositing code in png_init_read_transformations incorrectly applies background compositing during premultiplication, violating the invariant component ≤ alpha × 257 required by the simplified PNG API. This issue has been patched in version 1.6.51.

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
Open in CVSS calculator →

Weaknesses

CWE-125

Affected Products

libpngpnggroup
Library
OSS Libraries / generic-library
Astra Linux Special EditionООО «РусБИТех-Астра»
On-premOS
Operating Systems / linux-distro
РОСА ХРОМАО «НТЦ ИТ РОСА»
On-prem
Operating Systems / linux-distro
AndroidGoogle Inc
EmbeddedOS
Operating Systems / mobile-os
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
pnggrouposs-projectOSS Librariesaka libpng
ооо «русбитех-астра»commercialRUOperating Systemsaka rusbitech-astra
ао «нтц ит роса»commercialRUOperating Systems
google inccommercialUSMobile Appsaka google
ооо «ред софт»commercialRUOperating Systemsaka red soft
and 3 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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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/security/advisories/GHSA-hfc7-ph9c-wcww
github.com
https://github.com/pnggroup/libpng/issues/686
github.com
https://github.com/pnggroup/libpng/pull/751
github.com
and 11 more references View all →

Timeline

Published
Nov 24, 2025
Last Updated
Nov 26, 2025

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