Tenda AC11 Router Stack Buffer Overflow Vulnerability

Tenda AC11 devices contain a stack buffer overflow vulnerability in /goform/setmac which allows attackers to execute code via a crafted post request.

cat cve-2021-31755.json

Vendor: Tenda
Product: AC11 Router
CVSS: 9.8
EPSS (exploit probability): 85.8%
Status: kev
CISA patch-by (BOD 22-01): November 17, 2021
Published: November 3, 2021
Source: https://nvd.nist.gov/vuln/detail/CVE-2021-31755

Tenda AC11 devices contain a stack buffer overflow vulnerability in /goform/setmac which allows attackers to execute code via a crafted post request.

Added to CISA’s Known Exploited Vulnerabilities catalog on 2021-11-03. Required action per CISA: Apply updates per vendor instructions. Due date: 2021-11-17.

This is an auto-synced KEV catalog record pending a full 0dayNews write-up — see CISA’s KEV catalog and the NVD record linked above for primary sources.