CVE-2026-8697

HIGH

Improper Authentication Rate Limiting on TP-Link's Archer C64

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-8697. PoCs published by itzmetanjim.

AI-analyzed exploit summary The repository contains a functional Python script that exploits CVE-2026-8697, a logic flaw in TP-Link Archer C64 routers allowing brute-force attacks via an unprotected SSH service. The PoC automates password guessing to bypass the web UI rate limit.

Description

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.

Exploits (1)

github WORKING POC
by itzmetanjim · pythonpoc
https://github.com/itzmetanjim/cve-2026-8697

The repository contains a functional Python script that exploits CVE-2026-8697, a logic flaw in TP-Link Archer C64 routers allowing brute-force attacks via an unprotected SSH service. The PoC automates password guessing to bypass the web UI rate limit.

Classification
Working Poc 100%
Attack Type
Auth Bypass
Complexity
Trivial
Reliability
Reliable
Target: TP-Link Archer C64 (firmware < 1.15.0)
No auth needed
Prerequisites: network access to the router · SSH service exposed on port 22
devstral-2 · analyzed May 29, 2026 Full analysis →

References (2)

Core 2

Scores

CVSS v3 8.8
EPSS 0.0004
EPSS Percentile 11.5%
Attack Vector ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-288 CWE-306
Status published
Products (2)
tp-link/archer_c64_firmware 1.15.0
TP-Link Systems Inc./Archer C64 v1.0 < 1.15.0 Build 250729 Rel.63489n(4555)
Published May 28, 2026
Tracked Since May 28, 2026