CVE-2026-27171

LOW

2.9

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.

Details CVE

Score CVSS v3.12.9

SeveriteLOW

Vecteur CVSSCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Vecteur d'attaqueLOCAL

ComplexiteHIGH

Privileges requisNONE

Interaction utilisateurNONE

Publie2/18/2026

Derniere modification3/25/2026

Sourcenvd

Observations honeypot0

Produits affectes

zlib:zlib

Faiblesses (CWE)

CWE-1284

References

https://7asecurity.com/blog/2026/02/zlib-7asecurity-audit/(cve@mitre.org)

https://7asecurity.com/reports/pentest-report-zlib-RC1.1.pdf(cve@mitre.org)

https://github.com/madler/zlib/issues/904(cve@mitre.org)

https://github.com/madler/zlib/releases/tag/v1.3.2(cve@mitre.org)

https://ostif.org/zlib-audit-complete/(cve@mitre.org)

https://7asecurity.com/reports/pentest-report-zlib-RC1.1.pdf(134c704f-9b21-4f2e-91b3-4a467353bcc0)

Correlations IOC

Aucune correlation enregistree

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