KAYSUS KS-WR3600 routers with firmware 1.0.5.9.1 allow authentication bypass during…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-287.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-68717
- 2026-10-03 Alias added: GHSA-4cc6-4h77-4425
References
More Kaysus Ks-wr3600 Firmware vulnerabilities
- TI-2025-42189 KAYSUS KS-WR3600 routers with firmware 1.0.5.9.1 mishandle configuration management. CVSS 3.1HIGH 8.8
- TI-2025-42186 KAYSUS KS-WR3600 routers with firmware 1.0.5.9.1 enable the SSH service enabled by… CVSS 3.1HIGH 8.4
Sources
- CVE-2025-68717 · CVE Program
- CVE-2025-68717 · NVD
- FIRST EPSS
- GHSA-4cc6-4h77-4425 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences