CVE-2026-44328

Katalog CVE

CVSS 8.2 · High EPSS 0,54%

Kerentanan Missing Authentication for Critical Function pada free5gc. Skor CVSS 3.1 8.2 (High) menurut github.com.

Deskripsi (NVD)

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's SMF mounts the UPI management route group without inbound OAuth2 middleware. On top of that, the DELETE /upi/v1/upNodesLinks/{upNodeRef} handler unconditionally dereferences upNode.UPF after the type-guarded async release, even though AN-typed nodes are constructed without a UPF object. As a result, a single unauthenticated DELETE /upi/v1/upNodesLinks/gNB1 request crashes the handler with a nil-pointer panic AND mutates the in-memory user-plane topology before panicking (the UpNodeDelete(upNodeRef) line runs first). This is an unauthenticated, state-mutating panic-DoS sink that an off-path network attacker can trigger by name against any AN entry. 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

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

Jenis kelemahan (CWE)

CWE-306: Missing Authentication for Critical Function
CWE-476: NULL Pointer Dereference
CWE-862: Missing Authorization

EPSS (30 hari)

0,54% peluang dieksploitasi; lebih tinggi dari 43,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/free5gc/free5gc/security/advisories/GHSA-p9mg-74mg-cwwr exploit · advisory vendor
• https://github.com/free5gc/smf/commit/b57bc48081c3d3a2f333d02eb78e4fd31a120deb patch
• https://github.com/free5gc/smf/pull/199 issue tracking · patch
• https://github.com/free5gc/free5gc/issues/905 exploit · issue tracking