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CVE-2025-64506

nvd nist
Published: Nov 25, 2025Modified: Jun 17, 2026

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6.1
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Exploitability: 1.8 / Impact: 4.2
Source: security-advisories@github.com (Secondary)

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, a heap buffer over-read vulnerability exists in libpng's png_write_image_8bit function when processing 8-bit images through the simplified write API with convert_to_8bit enabled. The vulnerability affects 8-bit grayscale+alpha, RGB/RGBA, and images with incomplete row data. A conditional guard incorrectly allows 8-bit input to enter code expecting 16-bit input, causing reads up to 2 bytes beyond allocated buffer boundaries. This issue has been patched in version 1.6.51.

Affected (1)

Products: Libpng: Libpng
Libpng
1 product
Libpng
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Libpng
From 1.6.0 to 1.6.51

Related CWEs

CWE-125
Out-of-bounds Read
The product reads data past the end, or before the beginning, of the intended buffer.

References (3)

Source: security-advisories@github.com
Patch
Source: security-advisories@github.com
Issue Tracking
Source: security-advisories@github.com
Vendor Advisory

Timeline

No history available yet.