Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Libpng | Libpng | < 1.6.51 |
Related Weaknesses (CWE)
References
- https://github.com/pnggroup/libpng/commit/6a528eb5fd0dd7f6de1c39d30de0e41473431cPatch
- https://github.com/pnggroup/libpng/pull/748Issue Tracking
- https://github.com/pnggroup/libpng/security/advisories/GHSA-4952-h5wq-4m42Vendor Advisory
FAQ
What is CVE-2025-64505?
CVE-2025-64505 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 vulnerabili...
How severe is CVE-2025-64505?
CVE-2025-64505 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-64505?
Check the references section above for vendor advisories and patch information. Affected products include: Libpng Libpng.