Is CVE-2026-6136 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-6136 being exploited in the wild.

How severe is CVE-2026-6136?

High severity, with a CVSS score of 8.8, published 13 April 2026.

Is there a fix for CVE-2026-6136?

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-2026-6136 attacked?

It is attacked over the network.

Am I affected by CVE-2026-6136?

Check whether you run Tenda F451 or Tenda F451 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-2026-6136: Tenda F451 stack-based buffer overflow in frmL7ImForm

CVE-2026-6136 · Severity: high · CVSS 8.8 · Published 2026-04-13

A security vulnerability exists in the Tenda F451 router, a device used for home and small office networking. An attacker can exploit this flaw to cause a system crash or potentially take control of the device by sending specially crafted data to the router's management interface. This could lead to unauthorized access to the network, interception of traffic, or a complete loss of internet connectivity.

Technologies: Tenda F451, Tenda F451 Firmware. Vendors: Tenda.

Quick answers

Is CVE-2026-6136 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-6136 being exploited in the wild.
How severe is CVE-2026-6136?: High severity, with a CVSS score of 8.8, published 13 April 2026.
Which products and versions are affected?: Tenda F451 1.0.0.7_cn_svn7958.
Is there a fix for CVE-2026-6136?: 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-2026-6136 attacked?: It is attacked over the network.
Am I affected by CVE-2026-6136?: Check whether you run Tenda F451 or Tenda F451 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 F451 router firmware version 1.0.0.7_cn_svn7958. The flaw is located within the 'frmL7ImForm' function in the '/goform/L7Im' component, where improper validation of the 'page' argument allows for memory corruption. An attacker with network access and low-level privileges can exploit this by sending a malicious request to the web management interface. Successful exploitation can lead to remote code execution (RCE) or a denial-of-service (DoS) condition. Public exploit code has been disclosed, increasing the risk of active exploitation.

Affected products

Tenda F451 1.0.0.7_cn_svn7958

Timeline

2026-04-13: disclosed: Vulnerability disclosed and CVE assigned

References

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