Out-of-bounds Read in Libpng
CVE-2026-22695
LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.6.51 to 1.6.53, there is a heap buffer over-read in the libpng simplified API function png_image_finish_read when processing interlaced 16-bit PNGs with 8-bit output format and non-minimal row stride. This is a regression introduced by the fix for CVE-2025-65018. This vulnerability is fixed in 1.6.54.
Vulnerability class: Buffer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (10.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Libpng
- Pnggroup Libpng — versions < 1.6.54
Weakness classification (CWE)
References
- github.com/pnggroup/libpng/security/advisories/GHSA-mmq5-27w3-rxpp (Exploit, Third Party Advisory)
- github.com/pnggroup/libpng/issues/778 (Exploit, Third Party Advisory, Issue Tracking)
- github.com/pnggroup/libpng/commit/218612ddd6b17944e21eda56caf8b4bf7779d1ea (Patch)
- github.com/pnggroup/libpng/commit/e4f7ad4ea2 (Patch)
Frequently asked questions
- What is CVE-2026-22695?
- CVE-2026-22695 is a medium-severity vulnerability in Libpng, classified under Out-of-bounds Read. CVSS score: 6.1/10. Published 2026-01-12.
- How severe is CVE-2026-22695?
- Medium severity. CVSS v3 base score is 6.1 out of 10.