What’s Vulnerable › Vulnerabilities
CVE-2026-27850: Improper verification in Linksys MR9600, Linksys MX4200
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-02-25 · updated 2026-06-17
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.
Affected products
- Linksys MR9600: 1.0.4.205530
- Linksys MX4200: 1.0.13.210200
References
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