CVE-2020-5396: VMware Gemfire

High severity, CVSS 8.8. EPSS: 1.9% chance of exploitation in the next 30 days.

VMware GemFire versions prior to 9.10.0, 9.9.2, 9.8.7, and 9.7.6, and VMware Tanzu GemFire for VMs versions prior to 1.11.1 and 1.10.2, when deployed without a SecurityManager, contain a JMX service available which contains an insecure default configuration. This allows a malicious user to create an MLet mbean leading to remote code execution.

Affected products

• VMware Gemfire: from 9.7.0, before 9.7.6 (fixed in 9.7.6); from 9.8.0, before 9.8.7 (fixed in 9.8.7); from 9.9.0, before 9.9.2 (fixed in 9.9.2)
• VMware Tanzu Gemfire For Virtual Machines: from 1.10.0, before 1.10.2 (fixed in 1.10.2); from 1.11.0, before 1.11.1 (fixed in 1.11.1)

Published 2020-07-31. Last modified 2026-06-17.