CVE-2026-22184
zlib <= 1.3.1.2 untgz Global Buffer Overflow in TGZfname()
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
Exploitability
AV:LAttack VectorLocal
AC:LAttack ComplexityLow
PR:LPrivileges RequiredLow
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:HIntegrityHigh
A:HAvailabilityHigh
Weaknesses
Affected Products
Red Hat Inc.
commercial·USaka red hat
zlib software
oss-project·USaka zlib, Жан-Лу Гайи, Марк Адлер, pigz, марка спенсер, шон иган и др.
and 2 more affected products View all →
Exploitability
Official Patch Available
Attack Graph
Products CVE Techniques Tactics
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MITRE ATT&CK
2 techniques Initial Access
Privilege Escalation
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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