Thanks Fabio. They've all various levels of firmware, and was about to go into that direction.
I'll level them up with the latest FW version, have them all scanned again by Foundstone, and will get back with the results.
Our IT Sec team has run McAfee Foundstone scans to detect vulnerabilities on our corporate network.
It found the following vulnerabilities (or supposed to be) on our Phaser 8560 and 4510 models that are shared in our environment :
Web Server Supports Outdated SSLv2 Protocol
Web Server Supports Weak SSL Encryption Certificates
TLS-SSL Server Blockwise Chosen-Boundary Browser Weakness
I do not find any relevant information that could help resolving these issues.
I woudl be very happy with any help provided.