CVE-2025-64505: LIBPNG is vulnerable to a heap buffer overflow in `png_do_quantize` via malformed palette index

Overview

Severity

Medium (CVSS 6.1)

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H/E:P

Exploit Status

Not Exploited

Patch Tuesday

2025-Nov

Released

2025-11-26

Last Updated

2025-12-03

EPSS Score

0.19% (percentile: 9.0%)

Affected Products (2)

Other

• 20674-17084
• 18435-17086

Revision History

• 2025-11-26: Information published.
• 2025-11-27: Information published.
• 2025-12-02: Information published.
• 2025-12-03: Information published.