Is CVE-2026-6016 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-6016 being exploited in the wild.

How severe is CVE-2026-6016?

High severity, with a CVSS score of 8.8, published 10 April 2026.

Is there a fix for CVE-2026-6016?

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-2026-6016 attacked?

It is attacked over the network, in device firmware.

Am I affected by CVE-2026-6016?

Check whether you run Tenda Ac9 or Tenda Ac9 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.

CVE-2026-6016: Tenda AC9 stack overflow in WizardHandle decodePwd

CVE-2026-6016 · Severity: high · CVSS 8.8 · Published 2026-04-10

A vulnerability exists in the Tenda AC9 router, a device used to provide wireless internet connectivity in homes and small offices. An attacker can exploit this flaw to cause a system crash or potentially take control of the device by sending a specially crafted web request. This could lead to a total loss of internet availability or unauthorized access to the local network.

Technologies: Tenda Ac9, Tenda Ac9 Firmware. Vendors: Tenda.

Quick answers

Is CVE-2026-6016 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-6016 being exploited in the wild.
How severe is CVE-2026-6016?: High severity, with a CVSS score of 8.8, published 10 April 2026.
Which products and versions are affected?: Tenda AC9 15.03.02.13.
Is there a fix for CVE-2026-6016?: 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-2026-6016 attacked?: It is attacked over the network, in device firmware.
Am I affected by CVE-2026-6016?: Check whether you run Tenda Ac9 or Tenda Ac9 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.

Technical details

A stack-based buffer overflow vulnerability exists in the Tenda AC9 router (firmware version 15.03.02.13). The flaw is located within the decodePwd function of the /goform/WizardHandle file, which serves as a POST request handler. An attacker can trigger the overflow by manipulating the 'WANS' argument. This is a remote attack that requires low privileges (authenticated access). Successful exploitation can lead to remote code execution (RCE) or a denial of service (DoS) condition. Public exploit code is reportedly available.

Affected products

Tenda AC9 15.03.02.13

Timeline

2026-04-10: disclosed
2026-04-10: advisory

References

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