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7.5
Tenda Router: Unapproved Input Can Crash Device
CVE-2025-69700
Summary
A bug in the Tenda FH1203 router's settings page can cause the device to crash if an attacker sends the router a specially crafted input. This could allow the attacker to make the router unavailable, potentially disrupting internet access. Update the router's firmware to the latest version to fix the issue.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| tenda | fh1203_firmware | 2.0.1.6 | – |
Original title
Tenda FH1203 V2.0.1.6 contains a stack-based buffer overflow vulnerability in the modify_add_client_prio function, which is reachable via the formSetClientPrio CGI handler.
Original description
Tenda FH1203 V2.0.1.6 contains a stack-based buffer overflow vulnerability in the modify_add_client_prio function, which is reachable via the formSetClientPrio CGI handler.
nvd CVSS3.1
7.5
Vulnerability type
CWE-121
Stack-based Buffer Overflow
- https://github.com/xhh0124/SemVulLLM Exploit Third Party Advisory
Published: 23 Feb 2026 · Updated: 12 Mar 2026 · First seen: 6 Mar 2026