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A critical remote code execution vulnerability was discovered in IBM WebSphere Application Server versions 8.5 and 9.0. This issue arises from deserialization of untrusted data, allowing remote attackers to execute arbitrary code via a specially crafted sequence of serialized objects sent over the network.
Potential Consequences: Full remote compromise of the affected server Unauthorized data access System takeover or denial of service Exploit Requirements: High complexity (special object sequence required) No authentication or user interaction needed
IBM WebSphere Application Server 8.5 | IBM WebSphere Application Server 9.0
Affected Version: 8.5-9.0
IBM has released a security bulletin with remediation details.
Restrict network access to the WebSphere instance Monitor for suspicious serialized object traffic
Apply patches immediately Enable logging and monitoring of deserialization-related exceptions Use network intrusion prevention systems (IPS) to detect serialized exploit traffic
Review system logs for deserialization or memory corruption errors Analyze network traffic for object serialization patterns
Not specified
Not specified
No affected organizations specified
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