CVE-2026-44327

Katalog CVE

CVSS 10.0 · Critical EPSS 0,53%

Kerentanan Missing Authentication for Critical Function pada free5gc. Skor CVSS 3.1 10.0 (Critical) menurut github.com.

Deskripsi (NVD)

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the nnef-oam route group without inbound OAuth2/bearer-token authorization. A network attacker who can reach NEF on the SBI can hit the OAM route with no Authorization header at all and the handler returns 200 OK. The current OAM handler is a stub that returns null, but the structural defect is route-group-scoped: the entire OAM route group has no inbound auth middleware, so every future OAM operation added to this group inherits the missing auth boundary by default. This vulnerability is fixed in 4.2.2.

Rincian

Terbit di NVD

27 Mei 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

10.0 (Critical), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-306: Missing Authentication for Critical Function
CWE-862: Missing Authorization

EPSS (30 hari)

0,53% peluang dieksploitasi; lebih tinggi dari 43,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/free5gc/free5gc/security/advisories/GHSA-cmpj-2x3g-m7g3 exploit · advisory vendor
• https://github.com/free5gc/nef/pull/23 issue tracking · patch
• https://github.com/free5gc/free5gc/issues/861 exploit · issue tracking