CVE-2026-76650Pre-Authentication NULL Pointer Dereference in UPnP SOAP State Variable Query Processing in TP-Link TL-WR841N
Updated under an hour ago ()
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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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A NULL pointer dereference vulnerability exists in TL-WR841N v14 in the UPnP service when processing SOAP state variable query requests. A specially crafted SOAP query may trigger unexpected termination or instability of the process hosting the UPnP service. Successful exploitation may result in a denial-of-service condition affecting UPnP discovery, state query, or related management functionality until the affected process 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
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.