CVE-2025-64505

MEDIUM

6.1

Description

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to version 1.6.51, a heap buffer over-read vulnerability exists in libpng's png_do_quantize function when processing PNG files with malformed palette indices. The vulnerability occurs when palette_lookup array bounds are not validated against externally-supplied image data, allowing an attacker to craft a PNG file with out-of-range palette indices that trigger out-of-bounds memory access. This issue has been patched in version 1.6.51.

CVE Details

CVSS v3.1 Score6.1

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published11/25/2025

Last Modified11/26/2025

Sourcenvd

Honeypot Sightings0

Affected Products

libpng:libpng

Weaknesses (CWE)

CWE-125

References

https://github.com/pnggroup/libpng/commit/6a528eb5fd0dd7f6de1c39d30de0e41473431c37(security-advisories@github.com)

https://github.com/pnggroup/libpng/pull/748(security-advisories@github.com)

https://github.com/pnggroup/libpng/security/advisories/GHSA-4952-h5wq-4m42(security-advisories@github.com)

IOC Correlations

No correlations recorded

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