CVE-2026-40857 (GCVE-0-2026-40857)

Vulnerability from cvelistv5 – Published: 2026-09-16 11:21 – Updated: 2026-09-16 16:00
VLAI
Title
CSRF token bypass in T-Mobile 5G Box IDU routers
Summary
WNC T-Mobile 5G Box IDU router contains a cross-site request forgery (CSRF) vulnerability in the portal.cgi component. The anti-CSRF mechanism fails to validate the csrf_token_value parameter, accepting any arbitrary value as valid. This allows a remote attacker to perform unauthorized actions on the device by tricking an authenticated user into visiting a malicious website.This issue has been fixed in firmware version 1.1.0.651412
Severity
8.4 (High)
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 16:00 UTC
CWE
  • CWE-352 - Cross-Site request forgery (CSRF)
Assigner
CERT-PL CNA under the ENISA root
CNA scorecard B 81/100 over 253 records in the last 180 days details
References
URL Tags
https://cert.pl/posts/2026/09/CVE-2026-40854 third-party-advisory
Impacted products
Vendor Product Version CPE status
WNC T-Mobile 5G Box IDU Affected: 0 , < 1.1.0.651412 (custom)
    cpe:2.3:a:wnc:t-mobile_5g_box_idu:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Patryk Bogdan Adam Borczyk
Show details on NVD website
To clipboard 

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