Some routine testing via Qualys has reported a vulnerability when scanning the Mobility server. The scan turns up RSA ciphers and the Bouncy Castle/Bleichenbacher vulnerability.
A scan from ssllabs.com also shows these vulnerabilities:
TLS_RSA_WITH_AES_256_GCM_SHA384 (0x9d) WEAK 256
TLS_RSA_WITH_AES_256_CCM_8 (0xc0a1) WEAK 256
TLS_RSA_WITH_AES_256_CCM (0xc09d) WEAK 256
TLS_RSA_WITH_ARIA_256_GCM_SHA384 (0xc051) WEAK 256
TLS_RSA_WITH_AES_128_GCM_SHA256 (0x9c) WEAK 128
TLS_RSA_WITH_AES_128_CCM_8 (0xc0a0) WEAK 128
TLS_RSA_WITH_AES_128_CCM (0xc09c) WEAK 128
TLS_RSA_WITH_ARIA_128_GCM_SHA256 (0xc050) WEAK
If you encounter this problem, you must upgrade to the most recent release because security changes are made in each release. For this issue, upgrading to Groupwise-Mobility 18.5.0 resolved the issue.