CVEvulnerability
CVE-2021-37748
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
- Weaknesses
- CWE-787
Description
Multiple buffer overflows in the limited configuration shell (/sbin/gs_config) on Grandstream HT801 devices before 1.0.29 allow remote authenticated users to execute arbitrary code as root via a crafted manage_if setting, thus bypassing the intended restrictions of this shell and taking full control of the device. There are default weak credentials that can be used to authenticate.
Affected configurations
• grandstream ht801 firmware (< 1.0.29)
Related
Weakness · CWE (1)
- CWE-787 Out-of-bounds Write weakness
References
- http://www.grandstream.com/products/gateways-and-atas/analog-telephone-adaptors/product/ht801 Product, Vendor Advisory
- https://github.com/SECFORCE/CVE-2021-37748 Third Party Advisory
- https://www.secforce.com/blog/exploiting-grandstream-ht801-ata-cve-2021-37748-cve-2021-37915/ Exploit, Third Party Advisory
- http://www.grandstream.com/products/gateways-and-atas/analog-telephone-adaptors/product/ht801 Product, Vendor Advisory
- https://github.com/SECFORCE/CVE-2021-37748 Third Party Advisory
- https://www.secforce.com/blog/exploiting-grandstream-ht801-ata-cve-2021-37748-cve-2021-37915/ Exploit, Third Party Advisory