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7.1
HIGH CVSS 3.1
CVE-2025-66293
LIBPNG has an out-of-bounds read in png_image_read_composite
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.

INFO

Published Date :

Dec. 3, 2025, 9:15 p.m.

Last Modified :

Dec. 4, 2025, 2:16 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2025-66293 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Libpng libpng
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH [email protected]
Solution
Update libpng to version 1.6.52 or later to fix out-of-bounds read.
  • Upgrade libpng to version 1.6.52 or later.
  • Apply vendor-provided patches.
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-2025-66293.

URL Resource
https://github.com/pnggroup/libpng/commit/788a624d7387a758ffd5c7ab010f1870dea753a1
https://github.com/pnggroup/libpng/commit/a05a48b756de63e3234ea6b3b938b8f5f862484a
https://github.com/pnggroup/libpng/issues/764
https://github.com/pnggroup/libpng/security/advisories/GHSA-9mpm-9pxh-mg4f
http://www.openwall.com/lists/oss-security/2025/12/03/6
http://www.openwall.com/lists/oss-security/2025/12/03/7
http://www.openwall.com/lists/oss-security/2025/12/03/8
https://github.com/pnggroup/libpng/issues/764
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-66293 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-2025-66293 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).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-66293 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-66293 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.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Dec. 04, 2025

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2025/12/03/8
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Dec. 04, 2025

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2025/12/03/7
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Dec. 03, 2025

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2025/12/03/6
  • New CVE Received by [email protected]

    Dec. 03, 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. 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.
    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/788a624d7387a758ffd5c7ab010f1870dea753a1
    Added Reference https://github.com/pnggroup/libpng/commit/a05a48b756de63e3234ea6b3b938b8f5f862484a
    Added Reference https://github.com/pnggroup/libpng/issues/764
    Added Reference https://github.com/pnggroup/libpng/security/advisories/GHSA-9mpm-9pxh-mg4f
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Dec. 03, 2025

    Action Type Old Value New Value
    Added Reference https://github.com/pnggroup/libpng/issues/764
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 7.1
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact