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Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-22184

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 12.6%
CVSS Severity
CVSS v3 Score 9.8
Products affected by CVE-2026-22184
  • Zlib » Zlib » Version: N/A
    cpe:2.3:a:zlib:zlib:-
  • Zlib » Zlib » Version: 0.3
    cpe:2.3:a:zlib:zlib:0.3
  • Zlib » Zlib » Version: 0.4
    cpe:2.3:a:zlib:zlib:0.4
  • Zlib » Zlib » Version: 0.5
    cpe:2.3:a:zlib:zlib:0.5
  • Zlib » Zlib » Version: 0.6
    cpe:2.3:a:zlib:zlib:0.6
  • Zlib » Zlib » Version: 0.61
    cpe:2.3:a:zlib:zlib:0.61
  • Zlib » Zlib » Version: 0.7
    cpe:2.3:a:zlib:zlib:0.7
  • Zlib » Zlib » Version: 0.71
    cpe:2.3:a:zlib:zlib:0.71
  • Zlib » Zlib » Version: 0.8
    cpe:2.3:a:zlib:zlib:0.8
  • Zlib » Zlib » Version: 0.9
    cpe:2.3:a:zlib:zlib:0.9
  • Zlib » Zlib » Version: 0.91
    cpe:2.3:a:zlib:zlib:0.91
  • Zlib » Zlib » Version: 0.92
    cpe:2.3:a:zlib:zlib:0.92
  • Zlib » Zlib » Version: 0.93
    cpe:2.3:a:zlib:zlib:0.93
  • Zlib » Zlib » Version: 0.94
    cpe:2.3:a:zlib:zlib:0.94
  • Zlib » Zlib » Version: 0.95
    cpe:2.3:a:zlib:zlib:0.95
  • Zlib » Zlib » Version: 0.99
    cpe:2.3:a:zlib:zlib:0.99
  • Zlib » Zlib » Version: 1.0
    cpe:2.3:a:zlib:zlib:1.0
  • Zlib » Zlib » Version: 1.0.1
    cpe:2.3:a:zlib:zlib:1.0.1
  • Zlib » Zlib » Version: 1.0.2
    cpe:2.3:a:zlib:zlib:1.0.2
  • Zlib » Zlib » Version: 1.0.3
    cpe:2.3:a:zlib:zlib:1.0.3
  • Zlib » Zlib » Version: 1.0.4
    cpe:2.3:a:zlib:zlib:1.0.4
  • Zlib » Zlib » Version: 1.0.5
    cpe:2.3:a:zlib:zlib:1.0.5
  • Zlib » Zlib » Version: 1.0.6
    cpe:2.3:a:zlib:zlib:1.0.6
  • Zlib » Zlib » Version: 1.0.7
    cpe:2.3:a:zlib:zlib:1.0.7
  • Zlib » Zlib » Version: 1.0.8
    cpe:2.3:a:zlib:zlib:1.0.8
  • Zlib » Zlib » Version: 1.0.9
    cpe:2.3:a:zlib:zlib:1.0.9
  • Zlib » Zlib » Version: 1.1
    cpe:2.3:a:zlib:zlib:1.1
  • Zlib » Zlib » Version: 1.1.0
    cpe:2.3:a:zlib:zlib:1.1.0
  • Zlib » Zlib » Version: 1.1.1
    cpe:2.3:a:zlib:zlib:1.1.1
  • Zlib » Zlib » Version: 1.1.2
    cpe:2.3:a:zlib:zlib:1.1.2
  • Zlib » Zlib » Version: 1.1.3
    cpe:2.3:a:zlib:zlib:1.1.3
  • Zlib » Zlib » Version: 1.1.4
    cpe:2.3:a:zlib:zlib:1.1.4
  • Zlib » Zlib » Version: 1.2.0
    cpe:2.3:a:zlib:zlib:1.2.0
  • Zlib » Zlib » Version: 1.2.0.1
    cpe:2.3:a:zlib:zlib:1.2.0.1
  • Zlib » Zlib » Version: 1.2.0.2
    cpe:2.3:a:zlib:zlib:1.2.0.2
  • Zlib » Zlib » Version: 1.2.0.3
    cpe:2.3:a:zlib:zlib:1.2.0.3
  • Zlib » Zlib » Version: 1.2.0.4
    cpe:2.3:a:zlib:zlib:1.2.0.4
  • Zlib » Zlib » Version: 1.2.0.5
    cpe:2.3:a:zlib:zlib:1.2.0.5
  • Zlib » Zlib » Version: 1.2.0.6
    cpe:2.3:a:zlib:zlib:1.2.0.6
  • Zlib » Zlib » Version: 1.2.0.7
    cpe:2.3:a:zlib:zlib:1.2.0.7
  • Zlib » Zlib » Version: 1.2.0.8
    cpe:2.3:a:zlib:zlib:1.2.0.8
  • Zlib » Zlib » Version: 1.2.1
    cpe:2.3:a:zlib:zlib:1.2.1
  • Zlib » Zlib » Version: 1.2.1.1
    cpe:2.3:a:zlib:zlib:1.2.1.1
  • Zlib » Zlib » Version: 1.2.1.2
    cpe:2.3:a:zlib:zlib:1.2.1.2
  • Zlib » Zlib » Version: 1.2.10
    cpe:2.3:a:zlib:zlib:1.2.10
  • Zlib » Zlib » Version: 1.2.11
    cpe:2.3:a:zlib:zlib:1.2.11
  • Zlib » Zlib » Version: 1.2.12
    cpe:2.3:a:zlib:zlib:1.2.12
  • Zlib » Zlib » Version: 1.2.13
    cpe:2.3:a:zlib:zlib:1.2.13
  • Zlib » Zlib » Version: 1.2.2
    cpe:2.3:a:zlib:zlib:1.2.2
  • Zlib » Zlib » Version: 1.2.2.1
    cpe:2.3:a:zlib:zlib:1.2.2.1
  • Zlib » Zlib » Version: 1.2.2.2
    cpe:2.3:a:zlib:zlib:1.2.2.2
  • Zlib » Zlib » Version: 1.2.2.3
    cpe:2.3:a:zlib:zlib:1.2.2.3
  • Zlib » Zlib » Version: 1.2.2.4
    cpe:2.3:a:zlib:zlib:1.2.2.4
  • Zlib » Zlib » Version: 1.2.3
    cpe:2.3:a:zlib:zlib:1.2.3
  • Zlib » Zlib » Version: 1.2.3.1
    cpe:2.3:a:zlib:zlib:1.2.3.1
  • Zlib » Zlib » Version: 1.2.3.2
    cpe:2.3:a:zlib:zlib:1.2.3.2
  • Zlib » Zlib » Version: 1.2.3.3
    cpe:2.3:a:zlib:zlib:1.2.3.3
  • Zlib » Zlib » Version: 1.2.3.4
    cpe:2.3:a:zlib:zlib:1.2.3.4
  • Zlib » Zlib » Version: 1.2.3.5
    cpe:2.3:a:zlib:zlib:1.2.3.5
  • Zlib » Zlib » Version: 1.2.3.6
    cpe:2.3:a:zlib:zlib:1.2.3.6
  • Zlib » Zlib » Version: 1.2.3.7
    cpe:2.3:a:zlib:zlib:1.2.3.7
  • Zlib » Zlib » Version: 1.2.3.8
    cpe:2.3:a:zlib:zlib:1.2.3.8
  • Zlib » Zlib » Version: 1.2.3.9
    cpe:2.3:a:zlib:zlib:1.2.3.9
  • Zlib » Zlib » Version: 1.2.4
    cpe:2.3:a:zlib:zlib:1.2.4
  • Zlib » Zlib » Version: 1.2.4.1
    cpe:2.3:a:zlib:zlib:1.2.4.1
  • Zlib » Zlib » Version: 1.2.4.2
    cpe:2.3:a:zlib:zlib:1.2.4.2
  • Zlib » Zlib » Version: 1.2.4.3
    cpe:2.3:a:zlib:zlib:1.2.4.3
  • Zlib » Zlib » Version: 1.2.4.4
    cpe:2.3:a:zlib:zlib:1.2.4.4
  • Zlib » Zlib » Version: 1.2.4.5
    cpe:2.3:a:zlib:zlib:1.2.4.5
  • Zlib » Zlib » Version: 1.2.5
    cpe:2.3:a:zlib:zlib:1.2.5
  • Zlib » Zlib » Version: 1.2.5.1
    cpe:2.3:a:zlib:zlib:1.2.5.1
  • Zlib » Zlib » Version: 1.2.5.2
    cpe:2.3:a:zlib:zlib:1.2.5.2
  • Zlib » Zlib » Version: 1.2.5.3
    cpe:2.3:a:zlib:zlib:1.2.5.3
  • Zlib » Zlib » Version: 1.2.6
    cpe:2.3:a:zlib:zlib:1.2.6
  • Zlib » Zlib » Version: 1.2.6.1
    cpe:2.3:a:zlib:zlib:1.2.6.1
  • Zlib » Zlib » Version: 1.2.7
    cpe:2.3:a:zlib:zlib:1.2.7
  • Zlib » Zlib » Version: 1.2.7.1
    cpe:2.3:a:zlib:zlib:1.2.7.1
  • Zlib » Zlib » Version: 1.2.7.2
    cpe:2.3:a:zlib:zlib:1.2.7.2
  • Zlib » Zlib » Version: 1.2.7.3
    cpe:2.3:a:zlib:zlib:1.2.7.3
  • Zlib » Zlib » Version: 1.2.8
    cpe:2.3:a:zlib:zlib:1.2.8
  • Zlib » Zlib » Version: 1.2.9
    cpe:2.3:a:zlib:zlib:1.2.9
  • Zlib » Zlib » Version: 1.3
    cpe:2.3:a:zlib:zlib:1.3


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