{"id":"CVE-2026-40857","title":"WNC T-Mobile 5G Box IDU router contains a cross-site request forgery (CSRF) vulnerability in the portal.cgi component","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…","severity":"high","cvss":8.4,"cvssVector":"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","cwe":["CWE-352"],"vendor":"WNC","product":"T-Mobile 5G Box IDU","affected":["t-mobile_5g_box_idu < 1.1.0.651412"],"published":"2026-09-16","updated":"2026-09-16","sourceUpdated":"2026-09-16T19:14:25.980","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-40857","references":[{"url":"https://cert.pl/posts/2026/09/CVE-2026-40854","label":"cvd@cert.pl"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-16T16:00:38.020709Z"},"cvssSource":"cna","ingestedAt":"2026-09-16T11:54:38.960Z","epss":0.00189,"epssPercentile":0.08858,"slug":"CVE-2026-40857","body":"## Overview\n\nWNC 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\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":46.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}