Buffer overflow in Grandstream Ht801
CVE-2021-37748
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.
Vulnerability class: Buffer Overflow
EPSS: 0.073 (93.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Grandstream Ht801
- Grandstream Ht801_firmware
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Product, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-37748?
- CVE-2021-37748 is a high-severity vulnerability in Grandstream Ht801, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2021-10-28.
- How severe is CVE-2021-37748?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-37748 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.