CVE-2025-68717
Critical
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.
SeverityCritical
CVSS9.4
Exploit probability—
ProductKaysus Ks-wr3600 Firmware
PublishedJan 8, 2026
First seenJan 8, 2026
Weakness typeCWE-287Improper authentication
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| kaysus ks-wr3600_firmware | 1.0.5.9.1 | — |
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