CVE-2021-39510: dlink dir-816 firmware

csirt@kutim:~/threat-intel/cve/CVE-2021-39510

CVSS 9.8 · Critical EPSS 8,6%

Kerentanan Improper Neutralization of Special Elements used in a Command ('Command Injection') pada dlink dir-816 firmware. Skor CVSS 3.1 9.8 (Critical) menurut NVD.

Deskripsi (NVD)

An issue was discovered in D-Link DIR816_A1_FW101CNB04 750m11ac wireless router, The HTTP request parameter is used in the handler function of /goform/form2userconfig.cgi route, which can construct the user name string to delete the user function. This can lead to command injection through shell metacharacters.

Rincian

Terbit di NVD: 24 Agustus 2021
Terakhir diubah: 17 Juni 2026
Status NVD: Modified
CVSS 3.1: 9.8 (Critical), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
EPSS (30 hari): 8,6% peluang dieksploitasi; lebih tinggi dari 95,0% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
dlink	dir-816 firmware	Versi 101cnb04

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://www.dlink.com/en/security-bulletin/ advisory vendor
https://github.com/doudoudedi/main-DIR-816_A1_Command-injection advisory pihak ketiga
https://github.com/doudoudedi/main-DIR-816_A1_Command-injection/blob/main/injection_A1.md 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.