CVE-2025-12209 HIGH

CVE-2025-12209: Tenda O3 setDhcpConfig GetValue stack-based overflow

Vendor Tenda
Product O3
Weakness CWE-121
Published October 27, 2025
Last update February 24, 2026

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A vulnerability was determined in Tenda O3 1.0.0.10(2478). Affected is the function SetValue/GetValue of the file /goform/setDhcpConfig. Executing a manipulation of the argument dhcpEn can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized.

Key dates

02Disclosure timeline

October 27, 2025 CVE published
February 24, 2026 Record updated