CVE-2007-5269: Libpng

Medium severity, CVSS 5.0. EPSS: 4.8% chance of exploitation in the next 30 days.

Certain chunk handlers in libpng before 1.0.29 and 1.2.x before 1.2.21 allow remote attackers to cause a denial of service (crash) via crafted (1) pCAL (png_handle_pCAL), (2) sCAL (png_handle_sCAL), (3) tEXt (png_push_read_tEXt), (4) iTXt (png_handle_iTXt), and (5) ztXT (png_handle_ztXt) chunking in PNG images, which trigger out-of-bounds read operations.

Affected products

• Libpng Libpng: up to and including 1.2.20; version 1.0.28 only

Published 2007-10-08. Last modified 2026-06-16.