CVE-2025-68717

Severity: critical (CVSS 9.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-01-08 · updated 2026-06-17
Weakness: CWE-287

Description

KAYSUS KS-WR3600 routers with firmware 1.0.5.9.1 allow authentication bypass during session validation. If any user is logged in, endpoints such as /cgi-bin/system-tool accept unauthenticated requests with empty or invalid session values. This design flaw lets attackers piggyback on another user's active session to retrieve sensitive configuration data or execute privileged actions without authentication.

Affected products

Kaysus Ks-Wr3600 Firmware: 1.0.5.9.1

References

https://github.com/actuator/cve/blob/main/KAYSUS/CVE-2025-68717.txt
https://github.com/actuator/cve/tree/main/KAYSUS
https://www.kaysus.com/ks_wr3600__wifi_7_be3600_wireless_router.html

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