CVE-2026-27171: zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64 because x2nmodp can do right shifts within a loop that has no termination condition.
Overview
- Severity
- Low (CVSS 2.9)
- CVSS Vector
- CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
- Exploit Status
- Not Exploited
- Patch Tuesday
- 2026-Feb
- Released
- 2026-02-21
- Last Updated
- 2026-04-15
- EPSS Score
- 0.01% (percentile: 0.9%)
Affected Products (2)
Mariner
- azl3 zlib 1.3.1-1 on Azure Linux 3.0
Other
Revision History
- 2026-02-21: Information published.
- 2026-02-23: Information published.
- 2026-03-14: Information published.
- 2026-04-15: Information published.