CVE-2026-33062

Katalog CVE

CVSS 7.5 · High EPSS 1,0%

Kerentanan Improper Access Control pada free5gc. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

free5GC is an open source 5G core network. free5GC NRF prior to version 1.4.2 has an Improper Input Validation vulnerability leading to Denial of Service. All deployments of free5GC using the NRF discovery service are affected. The `EncodeGroupId` function attempts to access array indices [0], [1], [2] without validating the length of the split data. When the parameter contains insufficient separator characters, the code panics with "index out of range". A remote attacker can cause the NRF service to panic and crash by sending a crafted HTTP GET request with a malformed `group-id-list` parameter. This results in complete denial of service for the NRF discovery service. free5GC NRF version 1.4.2 fixes the issue. There is no direct workaround at the application level. The recommendation is to apply the provided patch or restrict access to the NRF API to trusted sources only.

Rincian

Terbit di NVD

20 Maret 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-284: Improper Access Control

EPSS (30 hari)

1,0% peluang dieksploitasi; lebih tinggi dari 62,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/free5gc/free5gc/security/advisories/GHSA-7c47-xr7q-p6hg advisory vendor
• https://github.com/free5gc/nrf/commit/dac77d8f8f2e0f041c5634fb3c685dcb9734b872 patch
• https://github.com/free5gc/nrf/pull/80 patch
• https://github.com/free5gc/free5gc/issues/777 exploit · issue tracking