CVE-2026-40854

Katalog CVE

CVSS 8.7 · High EPSS 0,32%

Kerentanan Authentication Bypass by Spoofing. Skor CVSS 4.0 8.7 (High) menurut cert.pl.

Deskripsi (NVD)

WNC T-Mobile 5G Box IDU router contains an authentication bypass vulnerability in the portal.cgi component. The session verification mechanism improperly validates the sessionid cookie by checking for the existence of a corresponding file in /tmp/login_user. An attacker can bypass authentication by using directory entries such as "." or ".." in the cookie, allowing unauthorized access to the administration panel.This issue has been fixed in firmware version 1.1.0.651412

Rincian

Terbit di NVD

16 September 2026

Terakhir diubah

28 September 2026

Status NVD

Awaiting Analysis

CVSS 4.0

8.7 (High), sumber cert.pl
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-290: Authentication Bypass by Spoofing

EPSS (30 hari)

0,32% peluang dieksploitasi; lebih tinggi dari 23,0% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://cert.pl/posts/2026/09/CVE-2026-40854