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7.4
Tenda FH451's WAN Configuration Page Allows Remote Code Execution
CVE-2026-3678
Summary
A security weakness in the Tenda FH451's WAN configuration page allows an attacker to potentially take control of the device. This could happen if an attacker sends a specially crafted request to the device. To protect your device, apply any available firmware updates.
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 determined in Tenda FH451 1.0.0.9. Affected is the function sub_3C434 of the file /goform/AdvSetWan. This manipulation of the argument wanmode/PPPOEPassword causes stack-based b...
Original description
A vulnerability was determined in Tenda FH451 1.0.0.9. Affected is the function sub_3C434 of the file /goform/AdvSetWan. This manipulation of the argument wanmode/PPPOEPassword causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized.
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