Quick answers
- Is CVE-2026-9430 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-9430 being exploited in the wild.
- How severe is CVE-2026-9430?
- High severity, with a CVSS score of 8.8, published 25 May 2026.
- Which products and versions are affected?
- Tenda F1202 1.2.0.20(408).
- Is there a fix for CVE-2026-9430?
- 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-2026-9430 attacked?
- It is attacked over the network, in device firmware.
- Am I affected by CVE-2026-9430?
- Check whether you run Tenda F1202 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 stack-based buffer overflow vulnerability (CWE-121) exists in the Tenda F1202 router firmware version 1.2.0.20(408). The flaw is located within the 'formGstDhcpSetSer' function in the '/goform/GstDhcpSetSer' component (noted as GstDhcpSetSerof in some reports). The vulnerability is triggered by insufficient length validation of the 'dips' argument, which is processed via unsafe string operations. A remote attacker with low privileges can exploit this by sending a specially crafted HTTP request to the device's web interface. Successful exploitation can lead to a denial of service (DoS) or remote code execution (RCE). Public exploit details have been disclosed.
Affected products
- Tenda F1202 1.2.0.20(408)
Timeline
- 2026-05-25: advisory: NVD publication date
- 2026-05-25: disclosed: Public disclosure of the vulnerability and PoC