CVE-2005-2096: Zlib

High severity, CVSS 7.5. EPSS: 5.6% chance of exploitation in the next 30 days.

zlib 1.2 and later versions allows remote attackers to cause a denial of service (crash) via a crafted compressed stream with an incomplete code description of a length greater than 1, which leads to a buffer overflow, as demonstrated using a crafted PNG file.

Affected products

• Zlib Zlib: version 1.2.0 only; version 1.2.1 only; version 1.2.2 only

Published 2005-07-06. Last modified 2026-07-14.