CVE-2026-27850 – Improper verification in Linksys MR9600, Linksys MX4200

CVE ID : CVE-2026-27850

Published : Feb. 25, 2026, 6:23 p.m. | 45 minutes ago

Description : Due to an improperly configured firewall rule, the router will accept any connection on the WAN port with the source port 5222, exposing all services which are normally only accessible through the local network.
This issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200.

Severity: 0.0 | NA

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