IBM WebSphere Application Server 8.5 and 9.0 traditional could allow a remote attacker to execute arbitrary code on the system with a specially-crafted sequence of serialized objects. IBM X-Force ID: 181231.Referenceshttps://www.ibm.com/support/pages/node/6220294https://exchange.xforce.ibmcloud.com/vulnerabilities/181231https://www.zerodayinitiative.com/advisories/ZDI-20-689/