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CVE-2017-18258

The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of service (memory consumption) via a…

Medium6.5EPSS 2.7%
Published
Updated
Reserved
Assigned by
mitre

Description

The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file.

Scores

CVSS scores of CVE-2017-18258, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.0Medium6.5CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
2.7% · top 14% of all CVEs (3 Nov 2026)

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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.

Weakness

Affected products

  • n/a

    • affected n/a

Affected packages

From reviewed advisories of the GitHub Advisory Database.

References (7)

Sources

The same CVE in the primary databases and aggregators, to check against.

Record last updated .