{"cve":"CVE-2025-4437","nvd":{"published":"2025-08-20T13:15:28.673","modified":"2026-09-26T00:10:00.127","status":"Deferred","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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","score":5.7},"cwes":["CWE-770"],"references":["https://access.redhat.com/security/cve/CVE-2025-4437","https://bugzilla.redhat.com/show_bug.cgi?id=2375084"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:07:46.309729541+00:00"},"epss":{"cve":"CVE-2025-4437","score":0.00248,"percentile":0.16159,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-8f93-j3fx-72f3","url":"https://osv.dev/vulnerability/GHSA-8f93-j3fx-72f3","summary":"CRI-O has Potential High Memory Consumption from File Read","modified":"2025-08-29T20:38:22Z","packages":[{"ecosystem":"Go","name":"github.com/cri-o/cri-o","purl":"pkg:golang/github.com/cri-o/cri-o","ranges":["<=1.33.3"],"fixed":[]}]},{"id":"GO-2025-3897","url":"https://osv.dev/vulnerability/GO-2025-3897","summary":"CRI-O has Potential High Memory Consumption from File Read in github.com/cri-o/cri-o","modified":"2026-03-03T04:56:51.746813Z","packages":[{"ecosystem":"Go","name":"github.com/cri-o/cri-o","purl":"pkg:golang/github.com/cri-o/cri-o","ranges":["all versions"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}