Description
Multiple
TP-Link Wi-Fi range extenders use a custom, reversible XOR-and-dictionary
transformation in the HTTP web-management login flow. An unauthenticated attacker
on the same local network who can capture the network traffic associated with
legitimate administrator login may be able to derive an alternative credential
value that produces the same accepted authentication result and use it to
authenticate to the device’s web-management interface with administrator
privileges. Exploitation requires the management login to use HTTP and the
attacker to observe the session key, dictionary, and login value associated
with a legitimate administrator login.





Successful
exploitation may allow an unauthenticated adjacent attacker to gain
administrator access to the affected device and modify exposed configuration
settings.
Published: 2026-10-14
Score: 5.9 Medium
EPSS: n/a
KEV: No
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 14 Oct 2026 18:45:00 +0000

Type Values Removed Values Added
Description Multiple TP-Link Wi-Fi range extenders use a custom, reversible XOR-and-dictionary transformation in the HTTP web-management login flow. An unauthenticated attacker on the same local network who can capture the network traffic associated with legitimate administrator login may be able to derive an alternative credential value that produces the same accepted authentication result and use it to authenticate to the device’s web-management interface with administrator privileges. Exploitation requires the management login to use HTTP and the attacker to observe the session key, dictionary, and login value associated with a legitimate administrator login. Successful exploitation may allow an unauthenticated adjacent attacker to gain administrator access to the affected device and modify exposed configuration settings.
Title Improper Authentication in Multiple TP-Link WiFi Repeaters
Weaknesses CWE-287
References
Metrics cvssV4_0

{'score': 5.9, 'vector': 'CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: TPLink

Published:

Updated: 2026-10-14T18:31:37.228Z

Reserved: 2026-10-12T17:19:32.357Z

Link: CVE-2026-109506

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-14T19:17:09.820

Modified: 2026-10-14T19:17:09.820

Link: CVE-2026-109506

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses