VULNERABILITY INTELLIGENCE

CVE-2021-3166

CVSS score7.5 HIGH
EPSS probability2.88%
CISA KEVNot currently listed
Published2021-01-18
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

  • CWE-434: Unrestricted Upload of File with Dangerous Type

Primary references