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Case File

CVE-2021-3166

HIGH · CVSS 7.5 EPSS 2.88% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-01-18 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-3166
Severity
HIGH
CVSS
7.5
EPSS
2.88%

Original NVD Description

An issue was discovered on ASUS DSL-N14U-B1 1.1.2.3_805 devices. An attacker can upload arbitrary file content as a firmware update when the filename Settings_DSL-N14U-B1.trx is used. Once this file is loaded, shutdown measures on a wide range of services are triggered as if it were a real update, resulting in a persistent outage of those services.

Related CVEs

Other vulnerabilities affecting the same vendor(s)