Zlib Software vulnerabilities
We track 1 vulnerability in Zlib Software products. 1 is rated high or critical, and none are known to be exploited. The most recent was published on January 7, 2026.
1vulnerabilities
0critical
1high
0exploited
7.8average CVSS score
Latest Zlib Software vulnerabilities
- 7.8 High severity
zlib: Out-of-bounds Write
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 oc