CVE-2021-37915

Published: Oct 28, 2021Modified: Jun 17, 2026

8.8

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability: 2.8 / Impact: 5.9

Source: NVD

Description

An issue was discovered on the Grandstream HT801 Analog Telephone Adaptor before 1.0.29.8. From the limited configuration shell, it is possible to set the malicious gdb_debug_server variable. As a result, after a reboot, the device downloads and executes malicious scripts from an attacker-defined host.

Affected (1)

Products: Grandstream: Ht801 Firmware

1 product

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Grandstream Ht801 Firmware	Before 1.0.29.8

Running on/with	Platform Versions
Grandstream Ht801	All versions

References (6)

http://firmware.grandstream.com/BETA/Release_Note_HT80x_1.0.29.8.pdf

Source: cve@mitre.org

Broken Link

http://www.grandstream.com/products/gateways-and-atas/analog-telephone-adaptors/product/ht801

Source: cve@mitre.org

ProductVendor Advisory

https://www.secforce.com/blog/exploiting-grandstream-ht801-ata-cve-2021-37748-cve-2021-37915/

Source: cve@mitre.org

ExploitThird Party Advisory

http://firmware.grandstream.com/BETA/Release_Note_HT80x_1.0.29.8.pdf

Source: af854a3a-2127-422b-91ae-364da2661108

Broken Link

http://www.grandstream.com/products/gateways-and-atas/analog-telephone-adaptors/product/ht801

Source: af854a3a-2127-422b-91ae-364da2661108

ProductVendor Advisory

https://www.secforce.com/blog/exploiting-grandstream-ht801-ata-cve-2021-37748-cve-2021-37915/

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party Advisory

Timeline

No history available yet.