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Vulnerability record · CVE-2022-4318 · published 25 September 2023

CVE-2022-4318: Kubernetes cri-o improper control of dynamically-managed code vulnerability

Kubernetes · Cri O

A vulnerability was found in cri-o. This issue allows the addition of arbitrary lines into /etc/passwd by use of a specially crafted environment variable.

7.8 CVSS 3.1 High EPSS 0.29% · top 80.6% CWE-538 · CWE-538CWE-913 · Improper control of dynamically-managed code
7.8CVSS 3.1 base score
0.29%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

A vulnerability was found in cri-o. This issue allows the addition of arbitrary lines into /etc/passwd by use of a specially crafted environment variable.

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

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/errata/RHSA-2023:1033 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:1503 Third Party Advisory
https://access.redhat.com/security/cve/CVE-2022-4318 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2152703 Issue TrackingThird Party Advisory
https://access.redhat.com/errata/RHSA-2023:1033 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:1503 Third Party Advisory
https://access.redhat.com/security/cve/CVE-2022-4318 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2152703 Issue TrackingThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2022-4318), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.