CVE-2025-66293: LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files.
CVE-2025-66293 · Severity: high · CVSS 7.1 · Published 2025-12-03
LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to 1.6.52, an out-of-bounds read vulnerability in libpng's simplified API allows reading up to 1012 bytes beyond the png_sRGB_base[512] array when processing valid palette PNG images with partial transparency and gamma correction. The PNG files that trigger this vulnerability are valid per the PNG specification; the bug is in libpng's internal state management. Upgrade to libpng 1.6.52 or later.
No. Junglewise Threat Intelligence has no report of CVE-2025-66293 being exploited in the wild.
How severe is CVE-2025-66293?
High severity, with a CVSS score of 7.1, published 3 December 2025.
Which products and versions are affected?
Libpng. The advisory does not name versions.
Is there a fix for CVE-2025-66293?
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-2025-66293?
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.