CVE-2026-15692: Tenda BE12 Pro stack overflow in SafeUrlFilter

CVE-2026-15692 · Severity: high · CVSS 8.8 · Published 2026-07-14

A security vulnerability has been identified in the Tenda BE12 Pro router, a device used to provide wireless internet connectivity. An attacker can exploit this flaw to crash the router's management interface or potentially take full control of the device. This could allow an unauthorized user to monitor network traffic, access sensitive data, or use the router as a jumping-off point to attack other devices on the home or business network.

Technologies: Tenda BE12 Pro. Vendors: Tenda.

Quick answers

Is CVE-2026-15692 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-15692 being exploited in the wild.
How severe is CVE-2026-15692?
High severity, with a CVSS score of 8.8, published 14 July 2026.
Which products and versions are affected?
Tenda BE12 Pro 16.03.66.23.
Is there a fix for CVE-2026-15692?
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-2026-15692 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2026-15692?
Check whether you run Tenda BE12 Pro 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 BE12 Pro router (firmware version 16.03.66.23) within the 'fromSafeUrlFilter' function located in the '/goform/SafeUrlFilter' endpoint. The root cause is the unsafe use of the 'sprintf' function, which processes the user-controlled 'page' parameter into a fixed-size 256-byte buffer without adequate length validation. A remote attacker can exploit this by sending a specially crafted POST request with an oversized 'page' argument. Successful exploitation can lead to memory corruption, allowing for arbitrary code execution (via return address overwriting) or a Denial of Service (DoS) by crashing the web server process. While some metrics suggest low privileges are required, public PoC code indicates the vulnerability may be triggerable without authentication.

Affected products

  • Tenda BE12 Pro 16.03.66.23

Timeline

  • 2026-06-11: disclosed: Initial discovery and issue report on GitHub
  • 2026-07-14: advisory: CVE published and NVD dataset updated

References

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