5.5

CVE-2026-27171

Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Zlib ≫ Zlib Version >= 1.2.12 < 1.3.2
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.2% 0.103
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
cve@mitre.org 2.9 1.4 1.4
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE-1284 Improper Validation of Specified Quantity in Input

The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.

https://github.com/madler/zlib/issues/904
Exploit
Issue Tracking
https://7asecurity.com/reports/pentest-report-zlib-RC1.1.pdf
Technical Description
https://7asecurity.com/blog/2026/02/zlib-7asecurity-audit/
Product
https://ostif.org/zlib-audit-complete/
Product
https://github.com/madler/zlib/releases/tag/v1.3.2
Release Notes