What is CVE-2025-28164?

CVE-2025-28164 is a medium-severity vulnerability in Libpng, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2026-01-27.

How severe is CVE-2025-28164?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Buffer overflow in Libpng

CVE-2025-28164

Buffer Overflow vulnerability in libpng 1.6.43-1.6.46 allows a local attacker to cause a denial of service via png_create_read_struct() function.

Published 2026-01-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (4.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 4.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000

Affected products

Libpng

Weakness classification (CWE)

References

github.com/pnggroup/libpng/issues/655 (Exploit, Issue Tracking)
gist.github.com/kittener/506516f8c22178005b4379c8b2a7de20 (Third Party Advisory)

Frequently asked questions

What is CVE-2025-28164?: CVE-2025-28164 is a medium-severity vulnerability in Libpng, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2026-01-27.
How severe is CVE-2025-28164?: Medium severity. CVSS v3 base score is 5.5 out of 10.