---
cve: "CVE-2026-44315"
severity: "CRITICAL"
cvss: 9.4
epss: "31%"
vendor: "Free5Gc"
kev: false
exploited: false
published: "2026-05-27 17:16:36"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T10:42:26+02:00"
---

# CVE-2026-44315

> 9.4 CRITICAL · 🧪 PoC

## Beschreibung

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the 3gpp-pfd-management API without inbound OAuth2/bearer-token authorization. A network attacker who can reach NEF on the SBI can create, read, and delete PFD-management transaction state with a forged or arbitrary bearer token (e.g. Authorization: Bearer not-a-real-token). The route group is also reachable even when the running config's ServiceList does not declare it, so operators who think they disabled the service via config are still exposed. This vulnerability is fixed in 4.2.2.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 8b0f4445fc931638fb624463ce3572a203517679 (Commit)

## Referenzen

- <https://github.com/free5gc/free5gc/security/advisories/GHSA-5f62-53r8-qrqf>
- <https://github.com/free5gc/free5gc/issues/858>
- <https://github.com/free5gc/nef/pull/23>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-44315) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_