TI-2026-22196 Aliases CVE-2026-27846 GHSA-6j93-38rf-cf9g

Missing authentication in Linksys MR9600, Linksys MX4200

LOW 29CWE-306Published 2026-02-25 · Updated 2026-02-25

Key facts

Attack vector: Local
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · None · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-306.

Summary

Due to missing authentication, a user with physical access to the device can misuse the mesh functionality for adding a new mesh device to the network to gain access to sensitive information, including the password for admin access to the web interface and the Wi-Fi passwords.This issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00157 4th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

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
Linksys	MR9600	1.0.4.205530 and later	—	No fix listed	CNA
Linksys	MX4200	1.0.13.210200	—	No fix listed	CNA

MR9600 VendorLinksys Affected 1.0.4.205530 and later Fixed in — No fix listed CNA
MX4200 VendorLinksys Affected 1.0.13.210200 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-27846
2026-10-03 Alias added: GHSA-6j93-38rf-cf9g

References

Advisory 1

https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-002.txt

TI-2025-24206 Linksys Routers E/WAG/WAP/WES/WET/WRT-Series CVSS 4.0CRITICAL 10.0
TI-2017-12715 OS command injection in Linksys WVBR0 CVSS 3.0CRITICAL 9.8
TI-2026-70977 Stack-based buffer overflow in Linksys E1700 Mac Filter CVSS 4.0CRITICAL 10.0
TI-2026-22199 Missing neutralization in Linksys MR9600, Linksys MX4200 CVSS 3.1CRITICAL 9.8
TI-2026-22198 Missing neutralization in Linksys MR9600, Linksys MX4200 CVSS 3.1CRITICAL 9.8
TI-2026-22197 Missing authentication in Linksys MR9600, Linksys MX4200 CVSS 3.1CRITICAL 9.8

See all 253 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences