CVE-2026-27850
Improper verification in Linksys MR9600, Linksys MX4200
Vexday Risk Score
21Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 7.5EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
25 Feb 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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