CVE-2026-27847: Linksys MR9600

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

Due to improper neutralization of special elements, SQL statements can be injected via the handshake of a TLS-SRP connection. This can be used to inject known credentials into the database that can be utilized to successfully complete the handshake and use the protected service. This issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200.

Affected products

  • Linksys MR9600: version 1.0.4.205530 only
  • Linksys MX4200: version 1.0.13.210200 only

Published 2026-02-25. Last modified 2026-06-17.