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Vulnerabilities

Vulnerability · CVE-2025-64506

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files.

Published Nov 24, 2025 · catalog updated Nov 25, 2025 · LIBPNG is a reference

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-64506. EPSS is 0.15%. Act only if a listed version of LIBPNG is a reference is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (LIBPNG is a reference).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium6.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.15%
Remediation
Version ranges on file
Affected products
vendor pnggroup libpng 1.6.0, < 1.6.51

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, a heap buffer over-read vulnerability exists in libpng's png_write_image_8bit function when processing 8-bit images through the simplified write API with convert_to_8bit enabled. The vulnerability affects 8-bit grayscale+alpha, RGB/RGBA, and images with incomplete row data. A conditional guard incorrectly allows 8-bit input to enter code expecting 16-bit input, causing reads up to 2 bytes beyond allocated buffer boundar

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor pnggroup libpng 1.6.0, < 1.6.511.6.0, < 1.6.51

How to fix CVE-2025-64506

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-64506. EPSS is 0.15%. Act only if a listed version of LIBPNG is a reference is installed.

Which versions are affected?

Compare what you have installed with pnggroup libpng 1.6.0, < 1.6.51 1.6.0, < 1.6.51. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.15%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 24, 2025 · EUVD

    Detected

    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, a heap buffer over-read vulnerability exists in libpng's png_write_image_8bit function when processing 8-bit images through the simplified write API with convert_to_8bit enabled. The vulnerability affects 8-bit grayscale+al

  2. Nov 25, 2025 · EUVD

    Updated

    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, a heap buffer over-read vulnerability exists in libpng's png_write_image_8bit function when processing 8-bit images through the simplified write API with convert_to_8bit enabled. The vulnerability affects 8-bit grayscale+al

Sources

  • CVE.orgVulnerability recordCVE-2025-64506

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-64506

    30-day exploitation probability 0.15%

    first.org
  • EUVDVulnerability recordEUVD-2025-199238

    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, a heap buffer over-read vulnerability exists in libpng's png_write_image_8bit function when processing

    euvd.enisa.europa.eu
  • urlscan.ioThreat intelligenceCVE-2025-64506
    urlscan.io

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • urlscan.ioNov 6, 2026
  • FIRST EPSSNov 6, 2026
  • CVE.orgOct 28, 2026
  • EUVDOct 28, 2026