CVE-2025-64720
LIBPNG is vulnerable to a buffer overflow in `png_image_read_composite` via incorrect palette premultiplication
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.
INFO
Published Date :
Nov. 25, 2025, 12:15 a.m.
Last Modified :
Nov. 26, 2025, 6:35 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | MITRE-CVE |
Solution
- Update LIBPNG library to version 1.6.51.
- Apply patches to affected applications.
- Verify the updated version.
Public PoC/Exploit Available at Github
CVE-2025-64720 has a 3 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-64720.
| URL | Resource |
|---|---|
| https://github.com/pnggroup/libpng/commit/08da33b4c88cfcd36e5a706558a8d7e0e4773643 | Patch |
| https://github.com/pnggroup/libpng/issues/686 | Exploit Issue Tracking |
| https://github.com/pnggroup/libpng/pull/751 | Issue Tracking Patch |
| https://github.com/pnggroup/libpng/security/advisories/GHSA-hfc7-ph9c-wcww | Exploit Vendor Advisory |
| https://github.com/pnggroup/libpng/security/advisories/GHSA-hfc7-ph9c-wcww | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-64720 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-64720
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Shell Python CMake Makefile C Assembly M4 DIGITAL Command Language Dockerfile C++
None
Shell Python CMake Makefile C Assembly M4 DIGITAL Command Language Dockerfile C++
None
Shell Python CMake Makefile C Assembly M4 DIGITAL Command Language Dockerfile C++
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-64720 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-64720 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Nov. 26, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:libpng:libpng:*:*:*:*:*:*:*:* versions from (including) 1.6.0 up to (excluding) 1.6.51 Added Reference Type GitHub, Inc.: https://github.com/pnggroup/libpng/commit/08da33b4c88cfcd36e5a706558a8d7e0e4773643 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/pnggroup/libpng/issues/686 Types: Exploit, Issue Tracking Added Reference Type GitHub, Inc.: https://github.com/pnggroup/libpng/pull/751 Types: Issue Tracking, Patch Added Reference Type CISA-ADP: https://github.com/pnggroup/libpng/security/advisories/GHSA-hfc7-ph9c-wcww Types: Exploit, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/pnggroup/libpng/security/advisories/GHSA-hfc7-ph9c-wcww Types: Exploit, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 25, 2025
Action Type Old Value New Value Added Reference https://github.com/pnggroup/libpng/security/advisories/GHSA-hfc7-ph9c-wcww -
New CVE Received by [email protected]
Nov. 25, 2025
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H Added CWE CWE-125 Added Reference https://github.com/pnggroup/libpng/commit/08da33b4c88cfcd36e5a706558a8d7e0e4773643 Added Reference https://github.com/pnggroup/libpng/issues/686 Added Reference https://github.com/pnggroup/libpng/pull/751 Added Reference https://github.com/pnggroup/libpng/security/advisories/GHSA-hfc7-ph9c-wcww