Is CVE-2026-11524 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-11524 being exploited in the wild.

How severe is CVE-2026-11524?

High severity, with a CVSS score of 8.8, published 8 June 2026.

Is there a fix for CVE-2026-11524?

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-2026-11524 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-11524?

Check whether you run Tenda W20E 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.

CVE-2026-11524: Tenda W20E stack overflow in modifyWifiFilterRules

CVE-2026-11524 · Severity: high · CVSS 8.8 · Published 2026-06-08

A vulnerability exists in the Tenda W20E enterprise router, a device used to manage business network connectivity. An attacker can exploit this flaw to crash the router's management interface or potentially take full control of the device. This could lead to network downtime, unauthorized access to network settings, or a foothold for further attacks on the corporate network.

Technologies: Tenda W20E. Vendors: Tenda.

Quick answers

Is CVE-2026-11524 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-11524 being exploited in the wild.
How severe is CVE-2026-11524?: High severity, with a CVSS score of 8.8, published 8 June 2026.
Which products and versions are affected?: Tenda W20E 15.11.0.6.
Is there a fix for CVE-2026-11524?: 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-2026-11524 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-11524?: Check whether you run Tenda W20E 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 exists in the Tenda W20E enterprise router (version 15.11.0.6) within the 'modifyWifiFilterRules' function of the web management interface. The issue stems from the use of the unsafe 'sprintf' function when processing the 'wifiFilterListRemark' parameter in HTTP POST requests to '/goform/modifyWifiFilterRules'. A remote attacker with low privileges (authenticated to the web interface) can provide an overly long string to overflow the stack buffer. This can result in a denial-of-service (DoS) condition through a service crash or potentially lead to remote code execution (RCE). A public exploit has been disclosed.

Affected products

Tenda W20E 15.11.0.6

Timeline

2026-06-08: disclosed: Vulnerability and exploit details made public.
2026-06-08: advisory: NVD published the CVE record.

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.