vulnerability

CVE-2026-40857

· published 2026-09-16 · 1 on the wire

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

Exploited in the wild

Not on KEV

Not in CISA's Known Exploited Vulnerabilities catalogue as of the last daily pull. Absence is not proof of safety.

EPSS · 30-day forecast

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FIRST has not scored this id yet.

CVSS · NVD

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no vector published

Internet exposure

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No exposure census on this CVE's dispatches.

On the wire1

16 SepVulnerabilities in WNC T-Mobile 5G Box IDU routersVULN

References

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