CVEvulnerability
CVE-2021-37915
8.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-10-28
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 9.0 HIGH — AV:N/AC:L/Au:S/C:C/I:C/A:C
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 configurations
• grandstream ht801 firmware (< 1.0.29.8)
References
- http://firmware.grandstream.com/BETA/Release_Note_HT80x_1.0.29.8.pdf Broken Link
- http://www.grandstream.com/products/gateways-and-atas/analog-telephone-adaptors/product/ht801 Product, Vendor Advisory
- https://www.secforce.com/blog/exploiting-grandstream-ht801-ata-cve-2021-37748-cve-2021-37915/ Exploit, Third Party Advisory
- http://firmware.grandstream.com/BETA/Release_Note_HT80x_1.0.29.8.pdf Broken Link
- http://www.grandstream.com/products/gateways-and-atas/analog-telephone-adaptors/product/ht801 Product, Vendor Advisory
- https://www.secforce.com/blog/exploiting-grandstream-ht801-ata-cve-2021-37748-cve-2021-37915/ Exploit, Third Party Advisory