TP-Link Archer C64 SSH Service authentication bypass

Summaryinfo

A vulnerability marked as critical has been reported in TP-Link Archer C64. This affects an unknown part of the component SSH Service. The manipulation leads to authentication bypass. This vulnerability is uniquely identified as CVE-2026-8697. The attack can only be initiated within the local network. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in TP-Link Archer C64 (the affected version is unknown). This issue affects an unknown code of the component SSH Service. The manipulation with an unknown input leads to a authentication bypass vulnerability. Using CWE to declare the problem leads to CWE-288. A product requires authentication, but the product has an alternate path or channel that does not require authentication. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Due to improper enforcement of authentication rate-limiting on a debug SSH service in Archer C64 v1, the SSH service allows unlimited authentication attempts and uses the same credentials as the web interface. This enables an attacker to brute-force valid credentials via SSH. Successful exploitation could allow an attacker with adjacent network access to obtain administrative credentials through unrestricted authentication attempts and subsequently gain full administrative access to the device, impacting system confidentiality, integrity, and availability.

The weakness was disclosed by Tanjim Kamal. The advisory is shared at tp-link.com. The identification of this vulnerability is CVE-2026-8697 since 05/15/2026. The exploitation is known to be easy. The attack needs to be initiated within the local network. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/07/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• TP-Link

Name

• Archer C64

License

• commercial

Website

• Vendor: https://www.tp-link.com/

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