zlib vulnerabilities

1 known vulnerability in zlib from Zlib Software. 1 is rated high or critical. Each entry lists the affected versions and the release that fixes it, where the vendor has published one.

Latest first

• 7.8 High severity

  zlib: Out-of-bounds Write

  CVE-2026-22184Jan 7, 2026Zlib Software

  zlib versions up to and including 1.3.1.2 include a global buffer overflow in the untgz utility located under contrib/untgz. The vulnerability is limited to the standalone demonstration utility and does not affect the core zlib compression library. The flaw oc