Critical (9.8) in tenda ac9 firmware. EPSS 3.8% chance of exploitation in the next 30 days.
A vulnerability was discovered in Tenda AC9 v3.0 V15.03.06.42_multi and Tenda AC9 V1.0 V15.03.05.19(6318)_CN which allows for remote code execution via shell metacharacters in the guestuser field to the __fastcall function with a POST request.
Severity
CVSS 3.1
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
3.8% chance of exploitation in the next 30 days; higher than 89% of CVEs (scores of 2026-10-31)