CVE-2026-27171
Low
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.
SeverityLow
CVSS2.9
Exploit probability—
ProductZlib
PublishedFeb 18, 2026
First seenFeb 18, 2026
Weakness typeCWE-1284CWE-1284
How to fix
Update
- zlib zlib1.3.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| zlib zlib | 1.2.12 ≤ v < 1.3.2 | 1.3.2 |
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