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TI-2021-02249 Aliases CVE-2021-3166GHSA-mm32-fp7q-h532

An issue was discovered on ASUS DSL-N14U-B1 1.1.2.3_805 devices.

Priority LOW 38CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-434.

Summary

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.

Why it matters now

EPSS 0.02879 86th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:asus:dsl-n14u_b1_firmware:1.1.2.3_805:*:*:*:*:*:*:*1.1.2.3_805VulnerableASUS
cpe:2.3:h:asus:dsl-n14u_b1:-:*:*:*:*:*:*:*not specified by NVDRunning onASUS
  • cpe:2.3:o:asus:dsl-n14u_b1_firmware:1.1.2.3_805:*:*:*:*:*:*:* Versions 1.1.2.3_805 Vulnerable ·ASUS
  • cpe:2.3:h:asus:dsl-n14u_b1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·ASUS

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-3166
  2. 2026-10-03 Alias added: GHSA-mm32-fp7q-h532

References

Exploit 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences