6.1

CVE-2025-64505: libpng Out-of-bounds Read

CVSS: 6.1v3.1MediumAnalyzed
AliasesALPINE-CVE-2025-64505SUSE-SU-2025:4383-1SUSE-SU-2025:4432-1
Published 24-11-2025Last modified 25-11-2025
Open JSON

Vulnerability summary

CVE-2025-64505 is a medium (CVSS 6.1) Out-of-bounds Read vulnerability in libpng. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8.3% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.19%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 16 · Related 14
DLA-4396-1DSA-6076-1MGASA-2025-0314OPENSUSE-SU-2025:15781-1OPENSUSE-SU-2026:20017-1RHSA-2026:6732

Timeline

  1. 24-11-2025
    PublishedVulnerability first disclosed.
  2. 25-11-2025
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

0.00 pp

From 0.19% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.19%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Suse4 products
  • libpng12&distro=SUSE Linux Enterprise Module for Basesystem 15 SP6< 1.2.57-150000.4.3.1
  • libpng12&distro=SUSE Linux Enterprise Module for Basesystem 15 SP7< 1.2.57-150000.4.3.1
  • libpng12&distro=SUSE Linux Enterprise Server LTSS Extended Security 12 SP5< 1.2.50-20.6.1
  • libpng15&distro=SUSE Linux Enterprise Server LTSS Extended Security 12 SP5< 1.5.22-10.7.1
Opensuse2 products
  • libpng12&distro=openSUSE Leap 15.6< 1.2.57-150000.4.3.1
  • libpng12&distro=openSUSE Tumbleweed< 1.2.59-4.1
Ubuntu2 products
  • libpng< 1.2.50-1ubuntu2.14.04.3+esm1 | < 1.2.54-1ubuntu1.1+esm2
  • libpng1.6< 1.6.20-2ubuntu0.1~esm2 | < 1.6.34-1ubuntu0.18.04.2+esm1 | < 1.6.37-2ubuntu0.1~esm1 | < 1.6.37-3ubuntu0.1 | < 1.6.43-5ubuntu0.1 | < 1.6.50-1ubuntu0.1
Alpine1 product
  • libpng< 1.6.53-r0 | < 1.6.51-r0
Chainguard1 product
  • libpng< 1.6.51-r0
Debian1 product
  • libpng1.6< 1.6.39-2+deb12u1 | < 1.6.48-1+deb13u1 | < 1.6.51-1
Libpng1 product
Pnggroup1 product
Wolfi1 product
  • libpng< 1.6.51-r0

9 vendors · 14 products

References

17 links
Show all 17 references