CVE-2025-64720: LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files.
CVE-2025-64720 · Severity: high · CVSS 7.1 · Published 2025-11-25
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, an out-of-bounds read vulnerability exists in png_image_read_composite when processing palette images with PNG_FLAG_OPTIMIZE_ALPHA enabled. The palette compositing code in png_init_read_transformations incorrectly applies background compositing during premultiplication, violating the invariant component ≤ alpha × 257 required by the simplified PNG API. This issue has been patched in version 1.6.51.
No. Junglewise Threat Intelligence has no report of CVE-2025-64720 being exploited in the wild.
How severe is CVE-2025-64720?
High severity, with a CVSS score of 7.1, published 25 November 2025.
Which products and versions are affected?
Libpng. The advisory does not name versions.
Is there a fix for CVE-2025-64720?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-64720?
Check whether you run Libpng. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.