CVE-2026-27642

Katalog CVE

CVSS 7.5 · High EPSS 0,67%

Kerentanan Improper Input Validation pada free5gc udm. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

free5gc UDM provides Unified Data Management (UDM) for free5GC, an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.1, remote attackers can inject control characters (e.g., %00) into the supi parameter, triggering internal URL parsing errors (net/url: invalid control character). This exposes system-level error details and can be used for service fingerprinting. All deployments of free5GC using the UDM Nudm_UEAU service may be affected. free5gc/udm pull request 75 contains a fix for the issue. No direct workaround is available at the application level. Applying the official patch is recommended.

Rincian

Terbit di NVD

24 Februari 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:H/I:N/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-20: Improper Input Validation

EPSS (30 hari)

0,67% peluang dieksploitasi; lebih tinggi dari 50,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/free5gc/free5gc/issues/749 exploit · issue tracking · advisory vendor
• https://github.com/free5gc/free5gc/security/advisories/GHSA-h4wg-rp7m-8xx4 advisory vendor
• https://github.com/free5gc/udm/commit/a7af2321ddea6368c43835f90f6d1b9d67dd2ea1 patch
• https://github.com/free5gc/udm/pull/75 issue tracking · patch