CVE-2026-76649: Null Dereference

Description

A NULL pointer dereference vulnerability exists in TL-WR841N v14 in the UPnP service when processing SOAP action requests. A specially crafted SOAP action request containing unexpected XML content may cause the UPnP daemon to terminate unexpectedly. Successful exploitation may result in a denial-of-service condition affecting UPnP functionality until the service is restarted or the device is rebooted.

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Weakness Type (CWE)

CWE-476 CWE-476

References

Other References

https://www.tp-link.com/en/support/download/tl-wr841n/v14/#Firmware https://www.tp-link.com/us/support/download/tl-wr841n/v14/#Firmware https://www.tp-link.com/us/support/faq/5270/

Frequently Asked Questions

What is CVE-2026-76649? +

A NULL pointer dereference vulnerability exists in TL-WR841N v14 in the UPnP service when processing SOAP action requests. A specially crafted SOAP action request containing unexpected XML content may cause the UPnP daemon to terminate unexpectedly. Successful exploitation may result in a denial-of-service condition affecting UPnP functionality until the service is restarted or the device is rebooted.

How do I check if I'm vulnerable to CVE-2026-76649? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-76649