Quick answers
- Is CVE-2025-57569 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2025-57569 being exploited in the wild.
- How severe is CVE-2025-57569?
- Medium severity, with a CVSS score of 5.6, published 10 September 2025.
- Which products and versions are affected?
- Tenda F3 Firmware V12.01.01.48_multi and later.
- Is there a fix for CVE-2025-57569?
- 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-2025-57569 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2025-57569?
- 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 starting with version V12.01.01.48_multi. The vulnerability is located in the '/goform/setNAT' endpoint, where the 'portList' parameter is processed without adequate bounds checking. An unauthenticated attacker on the network can trigger this overflow by sending a crafted HTTP request. While the attack complexity is rated as high, a successful exploit could lead to a denial-of-service (DoS) condition or potentially remote code execution (RCE). As of the advisory date, users should check for firmware updates from the vendor to mitigate this risk.
Affected products
- Tenda F3 Firmware V12.01.01.48_multi and later
Timeline
- 2025-09-10: disclosed
- 2025-09-10: advisory