CVE-2026-27171
2.9 · LOWOverview
CVE-2026-27171 is a low-severity vulnerability affecting zlib zlib. It was published on February 18, 2026 and has a CVSS 3.1 base score of 2.9 (LOW).
This vulnerability has a CVSS 3.1 base score of 2.9, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from zlib. Update zlib to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| zlib | zlib | >= 1.2.12, < 1.3.2 | Affected |
References
Frequently Asked Questions
What is CVE-2026-27171?
CVE-2026-27171 is a low-severity vulnerability affecting zlib zlib. It was published on February 18, 2026 and has a CVSS 3.1 base score of 2.9 (LOW).
How severe is CVE-2026-27171?
This vulnerability has a CVSS 3.1 base score of 2.9, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-27171?
Check the references section for vendor advisories and patches from zlib. Update zlib to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-27171?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-27171 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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