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Back to active CVEs
Medium · CVSS 5.3CVE-2026-76650

Pre-Authentication NULL Pointer Dereference in UPnP SOAP State Variable Query Processing in TP-Link TL-WR841NCVE-2026-76650

Answer in brief

CVE-2026-76650 records a Medium severity (CVSS 5.3) vulnerability in Pre-Authentication NULL Pointer Dereference in UPnP SOAP State Variable Query Processing in TP-Link TL-WR841N. The current sources do not mark it as known exploited. The current feed maps TP-Link System Inc./TL-WR841N v14 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 28, 2026Updated Sep 1, 2026Source checked Oct 13, 2026First seen by HOL Aug 28, 2026Material review Sep 1, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps TP-Link System Inc./TL-WR841N v14 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
TP-Link System Inc./TL-WR841N v14generic>=0 <TL-WR841N(US)_V14_4.19 Build 260820 Rel.33478 || >=0 <TL-WR841N(EU)_V14_4.19 Build 260821 Rel.56588TL-WR841N(US)_V14_4.19 Build 260820 Rel.33478, TL-WR841N(EU)_V14_4.19 Build 260821 Rel.56588, TL-WR841N(US)_V14_4.19, TL-WR841N(EU)_V14_4.19

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for TP-Link System Inc./TL-WR841N v14.
  2. 2Review the reported fix. Update TP-Link System Inc./TL-WR841N v14 to TL-WR841N(US)_V14_4.19 Build 260820 Rel.33478 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Aug 28, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 1, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 28, 2026

Sources and claim methodology

  • Source referencetp-link.com
  • Source referencetp-link.com
  • Source referencetp-link.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

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Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-476
Source
CVE List V5
Source checked
Oct 13, 2026
References
3 linked sources
Open source record