Description

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.

INFO

Published Date :

2026-02-18T02:36:19.509Z

Last Modified :

2026-02-18T13:38:55.713Z

Source :

mitre
AFFECTED PRODUCTS

The following products are affected by CVE-2026-27171 vulnerability.

Vendors Products
Zlib
  • Zlib
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-27171.

URL Resource
https://7asecurity.com/blog/2026/02/zlib-7asecurity-audit/ cve-icon cve-icon cve-icon
https://7asecurity.com/reports/pentest-report-zlib-RC1.1.pdf cve-icon cve-icon cve-icon cve-icon
https://github.com/madler/zlib/issues/904 cve-icon cve-icon cve-icon
https://github.com/madler/zlib/releases/tag/v1.3.2 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-27171 cve-icon
https://ostif.org/zlib-audit-complete/ cve-icon cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-27171 cve-icon
Login to claim this CVE

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact