CVE-2025-57573: Tenda F3 buffer overflow in goform/setWifi

CVE-2025-57573 · Severity: medium · CVSS 5.6 · Published 2025-09-10

The Tenda F3 wireless router is affected by a security vulnerability that could allow an attacker to disrupt the device's operations. By sending specially crafted data to the router's Wi-Fi configuration settings, an attacker could cause the system to crash or behave unpredictably. This could lead to a loss of internet connectivity for users and potentially allow for unauthorized access to limited device information.

Technologies: Tenda F3, Tenda F3 Firmware. Vendors: Tenda.

Quick answers

Is CVE-2025-57573 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-57573 being exploited in the wild.
How severe is CVE-2025-57573?
Medium severity, with a CVSS score of 5.6, published 10 September 2025.
Which products and versions are affected?
Tenda F3 V12.01.01.48_multi and later.
Is there a fix for CVE-2025-57573?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2025-57573 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2025-57573?
Check whether you run Tenda F3 or Tenda F3 Firmware at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A classic buffer overflow (CWE-120) exists in the Tenda F3 router firmware versions V12.01.01.48_multi and subsequent releases. The vulnerability is located in the 'goform/setWifi' endpoint and is triggered by providing an overly long string to the 'wifiTimeClose' parameter. An attacker can exploit this over a network, though the attack complexity is rated as high, likely due to specific configuration requirements or timing constraints. Successful exploitation can lead to a denial-of-service condition or potentially limited information disclosure. As of the advisory date, the referenced GitHub proof-of-concept link is reported as broken, and official patches should be sought from the vendor.

Affected products

  • Tenda F3 V12.01.01.48_multi and later

Timeline

  • 2025-09-10: advisory: Initial NVD publication date
  • 2026-07-04: other: Last modified date in NVD record

References

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