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System libraries

zlib vulnerabilities

Check any version of zlib by zlib project for known vulnerabilities, ranked by real-world exploitation and severity, with the version that fixes each one. 1 version already checked, 7 advisories seen. Free, no account.

zlib project Matched by product name through NVD 1 version checked

Checked against OSV, NVD and Red Hat, then ranked by real-world exploitation (CISA KEV) and exploit probability (EPSS). 5 free checks a day.

Versions already checked

zlib 1.2.11 7 known checked 2026-10-13

Advisories seen for zlib

critical CVE-2022-37434 CVSS 9.8 critical CVE-2023-45853 CVSS 9.8 critical CVE-2026-27820 CVSS 9.8 high CVE-2026-22184 CVSS 7.8 high CVE-2018-25032 CVSS 7.5 high CVE-2026-76844 CVSS 7.4 medium CVE-2023-6992 CVSS 4.0
NVD CVE.org

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The C and C++ libraries and command-line tools inside almost every system.

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Do you run zlib somewhere?

The Vulnerability Reporter inventories every machine and tells you when a new advisory applies to a version you actually run.

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