CVE-2025-68719: Kaysus Ks-WR3600 Firmware

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

KAYSUS KS-WR3600 routers with firmware 1.0.5.9.1 mishandle configuration management. Once any user is logged in and maintains an active session, an attacker can directly query the backup endpoint and download a full configuration archive. This archive contains sensitive files such as /etc/shadow, enabling credential recovery and potential full compromise of the device.

Affected products

• Kaysus Ks-WR3600 Firmware: version 1.0.5.9.1 only

Published 2026-01-08. Last modified 2026-06-17.