---
cve: "CVE-2025-4437"
severity: "MEDIUM"
cvss: 5.7
epss: "0.2%"
vendor: "Generic Security"
kev: false
exploited: false
published: "2025-08-20 13:15:28"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-22T23:56:31+02:00"
---

# CVE-2025-4437

> 5.7 MEDIUM

## Beschreibung

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-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Erforderlich | good |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Referenzen

- <https://access.redhat.com/security/cve/CVE-2025-4437>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2375084>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-4437) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_