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7.4
Tenda FH451 Router: Remote Code Execution via Buffer Overflow
CVE-2026-3677
Summary
A flaw in the Tenda FH451 router's settings page allows an attacker to potentially execute malicious code on the device remotely. This could be done by sending a specially crafted request to the router. To protect your network, update your router's firmware to the latest version available.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| tenda | fh451_firmware | 1.0.0.9 | – |
Original title
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 ...
Original description
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 remote. The exploit has been made public and could be used.
nvd CVSS2.0
9.0
nvd CVSS3.1
8.8
nvd CVSS4.0
7.4
Vulnerability type
CWE-119
Buffer Overflow
CWE-121
Stack-based Buffer Overflow
Published: 7 Mar 2026 · Updated: 13 Mar 2026 · First seen: 7 Mar 2026