CVE-2020-4534: IBM WebSphere Application Server

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 could allow a local authenticated attacker to gain elevated privileges on the system, caused by improper handling of UNC paths. By scheduling a task with a specially-crafted UNC path, an attacker could exploit this vulnerability to execute arbitrary code with higher privileges. IBM X-Force ID: 182808.

Affected products

• IBM WebSphere Application Server: version 7.0 only; version 8.0 only; version 8.5 only; version 9.0 only

Published 2020-08-03. Last modified 2026-06-17.