TP-Link RE580D v1 prior 1_20260429 Administrator Password Login input validation

Summaryinfo

A vulnerability was found in TP-Link Archer RE650 v1, Archer RE305 v1, Archer RE360 v1, TL-WA860RE v4 and RE580D v1. It has been rated as very critical. This issue affects some unknown processing of the component Administrator Password Handler. This manipulation of the argument Login causes input validation. This vulnerability is handled as CVE-2026-3294. The attack can only be done within the local network. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in TP-Link Archer RE650 v1, Archer RE305 v1, Archer RE360 v1, TL-WA860RE v4 and RE580D v1. It has been declared as very critical. Affected by this vulnerability is an unknown function of the component Administrator Password Handler. The manipulation of the argument login with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

An authentication logic vulnerability in multiple TP-Link range extenders allows an unauthenticated attacker on an adjacent network to manipulate a login parameter and reset the administrator password due to insufficient validation. Successful exploitation allows an attacker to obtain full administrative control of the affected device, potentially impacting on confidentiality, integrity, and availability.

The weakness was released by Job Jobse. The advisory is shared at tp-link.com. This vulnerability is known as CVE-2026-3294 since 02/26/2026. The exploitation appears to be easy. The attack needs to approached within the local network. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/23/2026).

Upgrading to version 1_20260429 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Router Operating System

Vendor

• TP-Link

Name

• Archer RE305 v1
• Archer RE360 v1
• Archer RE650 v1
• RE580D v1
• TL-WA860RE v4

License

• commercial

Website

• Vendor: https://www.tp-link.com/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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