CVE-2026-27850high

CVE-2026-27850: high-severity vulnerability in Linksys MR9600

Improper verification in Linksys MR9600, Linksys MX4200

Published

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.5epss 0.3%
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
Affected products
Linksys · MR9600Linksys · MX4200
Related CVEs — Linksys MR9600

In the same product, most dangerous first.

CVE-2026-6992HIGHLinksys MR9600 JNAP Action run_central2.sh BTRequestGetSmartConnectStatus os command injectionEPSS 8.1%CVE-2026-4558HIGHLinksys MR9600 SmartConnect.lua smartConnectConfigure os command injectionEPSS 5.0%CVE-2026-27849CRITICALMissing neutralization in Linksys MR9600, Linksys MX4200EPSS 0.4%CVE-2026-27848CRITICALMissing neutralization in Linksys MR9600, Linksys MX4200EPSS 0.4%CVE-2026-27847CRITICALMissing authentication in Linksys MR9600, Linksys MX4200EPSS 0.4%CVE-2026-25603MEDIUMPath Traversal vulnerability in Linksys MR9600, Linksys MX4200EPSS 0.3%