Buffer overflow in Tenda Fh451
CVE-2026-3677
A vulnerability was found in Tenda FH451 1.0.0.9. This impacts the function fromSetCfm of the file /goform/setcfm. The manipulation of the argument funcname/funcpara1 results in stack-based buffer overflow. The attack may be performed from…
Vulnerability class: Buffer Overflow
EPSS: 0.001 (28.3th 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/E:P/RL:X/RC:R.
Affected products
- Tenda Fh451 — versions 1.0.0.9
Weakness classification (CWE)
References
- VDB-349579 | Tenda FH451 setcfm fromSetCfm stack-based overflow (vdb-entry, technical-description)
- VDB-349579 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- Submit #765329 | Tenda FH451 V1.0.0.9 Stack-based Buffer Overflow (third-party-advisory)
- github.com/Litengzheng/vul_db/blob/main/FH451/vul_61/README.md (exploit)
- www.tenda.com.cn/ (product)
Frequently asked questions
- What is CVE-2026-3677?
- CVE-2026-3677 is a high-severity vulnerability in Tenda Fh451, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-03-07.
- How severe is CVE-2026-3677?
- High severity. CVSS v3 base score is 8.8 out of 10.