VULNERABILITY INTELLIGENCE

CVE-2026-22184

CVSS score7.8 HIGH
EPSS probability0.41%
CISA KEVNot currently listed
Published2026-01-07
Last modified2026-09-01
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

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 occurs when a user executes the untgz command with an excessively long archive name supplied via the command line, leading to an out-of-bounds write in a fixed-size global buffer.

Weakness classification

  • disclosure@vulncheck.com: CWE-787
  • nvd@nist.gov: CWE-787
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-120

Primary references