CVE-2021-33822: sing4g 4gee router hh70vb firmware

csirt@kutim:~/threat-intel/cve/CVE-2021-33822

CVSS 7.5 · High EPSS 1,9%

Kerentanan Uncontrolled Resource Consumption pada sing4g 4gee router hh70vb firmware. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

An issue was discovered on 4GEE ROUTER HH70VB Version HH70_E1_02.00_22. Attackers can use slowhttptest tool to send incomplete HTTP request, which could make server keep waiting for the packet to finish the connection, until its resource exhausted. Then the web server is denial-of-service.

Rincian

Terbit di NVD: 18 Juni 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-400: Uncontrolled Resource Consumption
EPSS (30 hari): 1,9% peluang dieksploitasi; lebih tinggi dari 79,5% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
sing4g	4gee router hh70vb firmware	Versi hh70_e1_02.00_22

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://www.sing4g.com/product-page/4gee-router-hh70vb-4g-300mbps-2lan-32wifi product · advisory vendor
https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33822.md exploit · advisory pihak ketiga
https://github.com/shekyan/slowhttptest 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.