CVE-2004-0597: Greg Roelofs Libpng

High severity, CVSS 10.0. EPSS: 81.9% chance of exploitation in the next 30 days.

Multiple buffer overflows in libpng 1.2.5 and earlier, as used in multiple products, allow remote attackers to execute arbitrary code via malformed PNG images in which (1) the png_handle_tRNS function does not properly validate the length of transparency chunk (tRNS) data, or the (2) png_handle_sBIT or (3) png_handle_hIST functions do not perform sufficient bounds checking.

Affected products

• Greg Roelofs Libpng: up to and including 1.2.5
• Microsoft Msn Messenger: version 6.1 only; version 6.2 only
• Microsoft Windows 98se: any version
• Microsoft Windows Me: any version
• Microsoft Windows Media Player: version 9 only
• Microsoft Windows Messenger: version 5.0 only

Published 2004-11-23. Last modified 2026-06-16.