CVE-2026-27171

zlib zlib

LOW 2.9

At a glance

Source
NVD
EPSS
EPSS 0.25 % · percentile 16 ()
State
PUBLISHED
Published
Updated
Assigner
mitre
NVD status
Analyzed

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.

Weaknesses (CWE)

  • CWE-1284 — Improper Validation of Specified Quantity in Input

References

Scores

VersionScoreVectorScored by
CVSS 3.1LOW 2.9CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Lmitre
CVSS 3.1LOW 2.9CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:LNVD · cve@mitre.org (Secondary)
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
zlib · zlibaffected 0 < 1.3.2

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD