Buffer overflow in Tendacn G1
CVE-2021-45994
Tenda routers G1 and G3 v15.11.0.17(9502)_CN were discovered to contain a stack overflow in the function formDelDhcpRule. This vulnerability allows attackers to cause a Denial of Service (DoS) via the delDhcpIndex parameter.
Vulnerability class: Buffer Overflow
EPSS: 0.011 (60.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Tendacn G1
- Tendacn G1_firmware — versions 15.11.0.17\(9502\)_cn
- Tendacn G3
- Tendacn G3_firmware — versions 15.11.0.17\(9502\)_cn
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_MISC, Broken Link)
- nvd@nist.gov (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-45994?
- CVE-2021-45994 is a high-severity vulnerability in Tendacn G1, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2022-02-04.
- How severe is CVE-2021-45994?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-45994 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.