High severity7.8OSV Advisory· Published Jan 7, 2026· Updated Jul 15, 2026
CVE-2026-22184
CVE-2026-22184
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
7- osv-coords4 versions
< 0+ 3 more
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
Patches
Vulnerability mechanics
References
8- seclists.org/fulldisclosure/2026/Jan/3nvdMailing ListThird Party Advisory
- www.vulncheck.com/advisories/zlib-untgz-global-buffer-overflow-in-tgzfnamenvdThird Party Advisory
- github.com/madler/zlib/issues/1142nvdIssue Tracking
- zlib.netnvdProduct
- access.redhat.com/security/cve/CVE-2026-22184nvd
- bugzilla.redhat.com/show_bug.cginvd
- cert-portal.siemens.com/productcert/html/ssa-470355.htmlnvd
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22184.jsonnvd
News mentions
1- Siemens CADRACISA ICS Advisories