CVE-2021-3166: asus dsl-n14u b1 firmware

csirt@kutim:~/threat-intel/cve/CVE-2021-3166

CVSS 7.5 · High EPSS 2,9%

Kerentanan Unrestricted Upload of File with Dangerous Type pada asus dsl-n14u b1 firmware. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD: 18 Januari 2021
Terakhir diubah: 17 Juni 2026
Status NVD: Modified
CVSS 3.1: 7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-434: Unrestricted Upload of File with Dangerous Type
EPSS (30 hari): 2,9% peluang dieksploitasi; lebih tinggi dari 86,5% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
asus	dsl-n14u b1 firmware	Versi 1.1.2.3_805

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://github.com/kaisersource/kaisersource.github.io/blob/main/_posts/2021-01-17-dsl-n14u.md exploit · advisory pihak ketiga
https://kaisersource.github.io/dsl-n14u exploit · advisory pihak ketiga

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.