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CVE-2026-22184

zlib <= 1.3.1.2 untgz Global Buffer Overflow in TGZfname()

Published: Jan 7, 2026Updated: Jul 15, 2026 Sources: CVE List NVD BDU csafCWE-787
7.8HIGH
NVD MITRE
EPSS Score
0.4%
Top 68.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-787CWE-120

Affected Products

Red Hat Inc.
commercial·USaka red hat
Red Hat Enterprise LinuxOn-premOS
Operating Systems / linux-distro
JBoss Core ServicesOn-prem
Operating Systems / linux-distro
OpenShift Container PlatformOn-prem
Operating Systems / linux-distro
Red Hat build of OpenJDKOn-prem
Operating Systems / linux-distro
Logging subsystem for Red Hat OpenShiftOn-prem
Operating Systems / linux-distro
zlib software
oss-project·USaka zlib, Жан-Лу Гайи, Марк Адлер, pigz, марка спенсер, шон иган и др.
zlibLibrary
OSS Libraries / generic-library
and 2 more affected products View all →

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://seclists.org/fulldisclosure/2026/Jan/3
seclists.org
https://zlib.net/
zlib.net
https://github.com/madler/zlib
github.com
and 43 more references View all →

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