Out-of-bounds Read Affecting libpng package, versions <1.6.51-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ALPINE322-LIBPNG-14139234
- published28 Nov 2025
- disclosed25 Nov 2025
Introduced: 25 Nov 2025
NewCVE-2025-64505 (opens in a new tab)How to fix?
Upgrade Alpine:3.22 libpng to version 1.6.51-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libpng package and not the libpng package as distributed by Alpine.
See How to fix? for Alpine:3.22 relevant fixed versions and status.
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.