---
cve: "CVE-2025-54574"
severity: "CRITICAL"
cvss: 9.3
epss: "22.9%"
vendor: "squid-cache"
kev: false
exploited: false
published: "2025-08-01 18:15:55"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T12:18:54+02:00"
---

# CVE-2025-54574

> 9.3 CRITICAL · 🧪 PoC

## Beschreibung

Squid is a caching proxy for the Web. In versions 6.3 and below, Squid is vulnerable to a heap buffer overflow and possible remote code execution attack when processing URN due to incorrect buffer management. This has been fixed in version 6.4. To work around this issue, disable URN access permissions.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 1d8175b27fc1c347649d4f221ff2633e8d800429 (Commit)
- a27bf4b84da23594150c7a86a23435df0b35b988 (Commit)

## Referenzen

- <https://github.com/squid-cache/squid/security/advisories/GHSA-w4gv-vw3f-29g3>
- <https://github.com/squid-cache/squid/commit/a27bf4b84da23594150c7a86a23435df0b35b988>
- <https://github.com/squid-cache/squid/releases/tag/SQUID_6_4>
- <http://www.openwall.com/lists/oss-security/2025/11/05/5>
- <https://lists.debian.org/debian-lts-announce/2025/09/msg00027.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-54574) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_