VULNERABILITY INTELLIGENCE

CVE-2021-31755

CVSS score9.8 CRITICAL

EPSS probability86.51%

CISA KEVKnown exploited vulnerability

Published2021-05-07

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Known Exploited Vulnerability

Tenda AC11 Router Stack Buffer Overflow Vulnerability

Vendor / product: Tenda / AC11 Router

Description

An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /goform/setmac allows attackers to execute arbitrary code on the system via a crafted post request.

Weakness classification

nvd@nist.gov: CWE-787
134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-787

Primary references

cve@mitre.org — Broken Link, Exploit, Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Broken Link, Exploit, Issue Tracking, Third Party Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0 — US Government Resource