CVE-2026-3677
HIGHCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3Description
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.
Analysis
Stack overflow in Tenda FH451 firmware's setcfm function allows authenticated remote attackers to achieve complete system compromise through malicious funcname or funcpara1 parameters. Public exploit code exists for this vulnerability, and no patch is currently available. …
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Remediation
Within 24 hours: Inventory all Tenda FH451 1.0.0.9 devices across your organization and isolate affected units from production networks if operationally feasible. Within 7 days: Implement network segmentation to restrict access to the vulnerable devices, disable the /goform/setcfm endpoint via WAF or firewall rules if possible, and deploy enhanced monitoring for suspicious activities targeting these devices. …
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External POC / Exploit Code
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