Out-of-bounds Read in Libpng
CVE-2025-64505
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 f…
Vulnerability class: Buffer Overflow
EPSS: 0.002 (8.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H.
Affected products
- Libpng
- Pnggroup Libpng — versions < 1.6.51
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-64505?
- CVE-2025-64505 is a medium-severity vulnerability in Libpng, classified under Out-of-bounds Read. CVSS score: 6.1/10. Published 2025-11-25.
- How severe is CVE-2025-64505?
- Medium severity. CVSS v3 base score is 6.1 out of 10.