Medium 5.3Published Aug 28, 2026

CVE-2026-76649Pre-Authentication NULL Pointer Dereference in UPnP SOAP Action Request Processing in TP-Link TL-WR841N

Updated under an hour ago (2026-10-19 11:10 UTC)

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It affects TP-Link System Inc. TL-WR841N v14. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for TP-Link System Inc. TL-WR841N v14

Exploited in the last 30 days

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.

CVSS: 5.3 MEDIUM (v4.0, CNA)CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Weakness (CWE): CWE-476
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: TPLink
NVD analysis: Deferred
Record last updated: Aug 31, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

TP-Link System Inc. TL-WR841N v14 tp_link_system:tl_wr841n_v14 (from the name)	before TL-WR841N(US)_V14_4.19 Build 260820 Rel.33478; before TL-WR841N(EU)_V14_4.19 Build 260821 Rel.56588	CNA record

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.