Bottom line: IBM WebSphere Application Server and Liberty contain multiple vulnerabilities that enable arbitrary code execution with server privileges, data disclosure, and privilege escalation.
IBM has confirmed security vulnerabilities in WebSphere Application Server and WebSphere Application Server Liberty that attackers can exploit for arbitrary code execution, privilege escalation, and data disclosure.
Multiple vulnerabilities enable attackers to execute arbitrary code with the privileges of the Application Server process. The flaws affect both IBM WebSphere product lines and enable not only code execution but also privilege escalation, allowing attackers to elevate their access level within the system.
The attack surface also includes denial-of-service scenarios where the server can be crashed or disrupted, as well as information disclosure for accessing sensitive data. Attackers can additionally manipulate files, perform cross-site scripting attacks, and bypass security mechanisms.
For CISOs, this represents a broad attack surface in environments using WebSphere for application execution. The vulnerabilities require prioritized patching, particularly if the affected systems are accessible internally or externally.
Source: wid.cert-bund.de · Published July 31, 2026
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