Unspecified vulnerability in IBM Tivoli SecureWay Policy Director 3.8, Access Manager for e-business 3.9 to 5.1, Access Manager Identity Manager Solution 5.1, Configuration Manager 4.2, Configuration Manager for Automated Teller Machines 2.1.0, and IBM WebSphere Everyplace Server, Service Provider Offering for Multi-platforms 2.1.3 to 2.15 allow remote attackers to hijack sessions of authenticated users via unknown attack vectors involving certain cookies, aka "Potential Credential Impersonation Attack."