CVE-2025-4437
MEDIUM EPSS 13.0%
Published Aug 20, 202510mo ago · Modified Jun 17, 20262w ago
5.7 CVSS 3.1
Published Aug 20, 2025 10mo ago
Last Modified Jun 17, 2026 2w ago
Description
There's a vulnerability in the CRI-O application where when container is launched with securityContext.runAsUser specifying a non-existent user, CRI-O attempts to create the user, reading the container's entire /etc/passwd file into memory. If this file is excessively large, it can cause the a high memory consumption leading applications to be killed due to out-of-memory. As a result a denial-of-service can be achieved, possibly disrupting other pods and services running in the same host.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction Required
Scope Unchanged
Confidentiality None
Integrity None
Availability High
Threat Intelligence
EPSS Exploit Probability
13.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-770
References 2
- access.redhat.com https://access.redhat.com/security/cve/CVE-2025-4437
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2375084
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.