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7.4

Tenda FH451 Routers: Remote Attack via Malformed Network Request

CVE-2025-7853 · published 1 year ago
Summary

A critical security risk in Tenda FH451 routers allows hackers to remotely attack the device by sending a specially crafted network request. This could potentially let an attacker take control of the router. Tenda has likely released a patch or update to fix this issue, and users should check for and install the latest firmware version for their device.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
tenda fh451_firmware 1.0.0.9
cpe:2.3:o:tenda:fh451_firmware:1.0.0.9:*:*:*:*:*:*:*
Original advisory text
A vulnerability was found in Tenda FH451 1.0.0.9. It has been rated as critical. This issue affects the function fromSetIpBind of the file /goform/SetIpBind. The manipulation of the argument page l...
A vulnerability was found in Tenda FH451 1.0.0.9. It has been rated as critical. This issue affects the function fromSetIpBind of the file /goform/SetIpBind. The manipulation of the argument page leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker full control
Severity
7.4 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-119Buffer Overflow
CWE-121Stack-based Buffer Overflow
Timeline
Published19 Jul 2025
Updated4 Nov 2026
First seen7 Mar 2026
Sources
CVE-2025-7853 · NVD
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