CVE-2026-27171
MEDIUM
5.5
CVSS Score
Published: February 18, 2026 at 02:36 AM UTC
Updated: June 17, 2026 at 10:26 AM UTC
1 product affected across 1 vendorZlib
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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
PoC
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
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (5)
SSVC — Action Prioritization
SSVCPoCNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusANALYZED
CWE
CWE-1284
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