KAYSUS KS-WR3600 routers with firmware 1.0.5.9.1 enable the SSH service enabled by default on the LAN interface.

published 2026-01-08 10mo ago modified 2026-11-04 5d ago also EUVD-2026-1440

cvss: 8.4; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 14%
public exploits: 0; none known

KAYSUS KS-WR3600 routers with firmware 1.0.5.9.1 enable the SSH service enabled by default on the LAN interface. The root account is configured with no password, and administrators cannot disable SSH or enforce authentication via the CLI or web GUI. This allows any LAN-adjacent attacker to trivially gain root shell access and execute arbitrary commands with full privileges.

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CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 10mo ago (2026-01-08)

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	8.4	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	8.4	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

Weakness

CWE-306 Missing Authentication for Critical Functionality
CWE-521 Weak Password Requirements
CWE-284 Improper Access Control

References

kaysus.com /ks_wr3600__wifi_7_be3600_wireless_router.html
product
github.com /actuator/cve/tree/main/KAYSUS
third-party-advisory
github.com /actuator/cve/blob/main/KAYSUS/CVE-2025-68716.txt
third-party-advisory

Sources

CVE List CVE-2025-68716
NVD CVE-2025-68716

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