CVE-2025-12211: Tenda o3 FIRMWARE1.0.0.10(2478)

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

A security flaw has been discovered in Tenda O3 1.0.0.10(2478). Affected by this issue is the function SetValue/GetValue of the file /goform/setDmzInfo. The manipulation of the argument dmzIP results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.

Affected products

• Tenda o3 FIRMWARE1.0.0.10(2478): any version

Published 2025-10-27. Last modified 2026-10-08.