Security appliance firmware versions MX 19.2.1 changelog Important notice As of MX 19.1, Cisco Meraki will no longer support USB-based Cellular Failover on the MX and Z platforms. Legacy products notice When configured for this version, Z1 devices will run MX 14.56. When configured for this version, MX400 and MX600 devices will run MX 16.16.9. When configured for this version, MX64(W), MX65(W), MX84, MX100, and vMX100 devices will run MX 18.107.12. Executive summary The latest release enhances cryptographic capabilities by incorporating advanced Diffie-Hellman groups, DH15 and DH21, into IPSec and AutoVPN solutions. These enhancements align with industry best practices, providing robust security for encrypted communications. What's new Added support for Diffie-Hellman Groups 15 (3072-bit ECDH) and 21 (521-bit ECDH encryption) in IPsec and AutoVPN configurations, ensuring interoperability with modern cryptographic standards and enhances security postures for sensitive communications. Modem firmware visibility on dashboard - Z4C. Known issues status The list is no longer being updated with new information. Please see the latest available release for new, active updates. Many existing issue reports have not been confirmed to affect MX 19.2 firmware versions. Known issues There is an increased risk of encountering device stability and performance issues on all platforms and across all configurations.
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