CVE-2026-76649

UNKNOWN 0.0

Pre-Authentication NULL Pointer Dereference in UPnP SOAP Action Request Processing in TP-Link TL-WR841N

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-476
Vendor	tp-link system inc.
Product	tl-wr841n v14
Published	Aug 28, 2026

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Affected Versions

TP-Link System Inc. / TL-WR841N v14

0 < TL-WR841N(US)_V14_4.19 Build 260820 Rel.33478 0 < TL-WR841N(EU)_V14_4.19 Build 260821 Rel.56588

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

Jincheng Wang (@winmt) from Nanjing University of Posts and Telecommunications