Is CVE-2026-6133 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-6133 being exploited in the wild.

How severe is CVE-2026-6133?

High severity, with a CVSS score of 8.8, published 12 April 2026.

Is there a fix for CVE-2026-6133?

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-2026-6133 attacked?

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

Am I affected by CVE-2026-6133?

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-2026-6133: Tenda F451 stack overflow in fromSafeUrlFilter

CVE-2026-6133 · Severity: high · CVSS 8.8 · Published 2026-04-12

A vulnerability exists in the Tenda F451 wireless router, a device used to provide internet connectivity for homes and small offices. An attacker can exploit this flaw to cause a system crash or potentially take control of the device. This could lead to a complete loss of internet availability or unauthorized access to the local network.

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

Quick answers

Is CVE-2026-6133 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-6133 being exploited in the wild.
How severe is CVE-2026-6133?: High severity, with a CVSS score of 8.8, published 12 April 2026.
Which products and versions are affected?: Tenda F451 1.0.0.7_cn_svn7958.
Is there a fix for CVE-2026-6133?: 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-2026-6133 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-6133?: 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 running firmware version 1.0.0.7_cn_svn7958. The flaw is located within the 'fromSafeUrlFilter' function in the '/goform/SafeUrlFilter' file. By manipulating the 'page' argument, a remote attacker with low privileges can overflow the stack buffer. This can lead to remote code execution or a denial-of-service (DoS) condition. An exploit for this vulnerability is reportedly available in the public domain.

Affected products

Tenda F451 1.0.0.7_cn_svn7958

Timeline

2026-04-12: disclosed: Initial disclosure date
2026-04-12: advisory: CVE-2026-6133 published

References

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