# CVE-2025-12611: A vulnerability was identified in Tenda AC21 16.03.08.16. This vulnerability affects the function formSetPPTPServer of…

Source: https://junglewise.ai/threats/cve-2025-12611-a-vulnerability-was-identified-in-tenda-ac21-16-03-08-16-this  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-11-03  
License: CC BY 4.0 with a link back

CVE-2025-12611 · Severity: high · CVSS 8.8 · Published 2025-11-03

A vulnerability was identified in Tenda AC21 16.03.08.16. This vulnerability affects the function formSetPPTPServer of the file /goform/SetPptpServerCfg. The manipulation of the argument startIp leads to buffer overflow. Remote exploitation of the attack is possible. The exploit is publicly available and might be used.

Technologies: [Tenda Ac21](https://junglewise.ai/threats/technologies/ac21), [Tenda Ac21 Firmware](https://junglewise.ai/threats/technologies/ac21-firmware). Vendors: [Tenda](https://junglewise.ai/threats/vendors/tenda).

## Quick answers

**Is CVE-2025-12611 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-12611 being exploited in the wild.

**How severe is CVE-2025-12611?** High severity, with a CVSS score of 8.8, published 3 November 2025.

**Which products and versions are affected?** Tenda Ac21, Tenda Ac21 Firmware. The advisory does not name versions.

**Is there a fix for CVE-2025-12611?** 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.

**Am I affected by CVE-2025-12611?** Check whether you run Tenda Ac21 or Tenda Ac21 Firmware. 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.

## Affected products

- Tenda Ac21
- Tenda Ac21 Firmware

## Related threats

- [A vulnerability has been found in Tenda AC21 16.03.08.16. This vulnerability affects unknown code of the file…](https://junglewise.ai/threats/cve-2025-13446-a-vulnerability-has-been-found-in-tenda-ac21-16-03-08-16-this)
- [A flaw has been found in Tenda AC21 16.03.08.16. This affects an unknown part of the file /goform/SetIpMacBind…](https://junglewise.ai/threats/cve-2025-13445-a-flaw-has-been-found-in-tenda-ac21-16-03-08-16-this-affects-an)