CVE-2021-31756

CRITICAL

Tenda AC11 Firmware <= 02.03.01.104_cn - Stack Buffer Overflow via /gofrom/setwanType

Title source: llm
STIX 2.1

Description

An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /gofrom/setwanType allows attackers to execute arbitrary code on the system via a crafted post request. This occurs when input vector controlled by malicious attack get copied to the stack variable.

References (1)

Core 1
Core References
Exploit, Issue Tracking, Third Party Advisory x_refsource_misc
https://github.com/Yu3H0/IoT_CVE/tree/main/Tenda/CVE_1

Scores

CVSS v3 9.8
EPSS 0.0151
EPSS Percentile 81.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-787
Status published
Products (1)
tenda/ac11_firmware < 02.03.01.104_cn
Published May 07, 2021
Tracked Since Feb 18, 2026