CVE-2020-5396

Name: CVE-2020-5396
Creator: NVD / NIST
Published: 2020-07-31T20:15:12.937+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.89%

Last modified Jun 17, 2026

CVE-2020-5396 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 1.89% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.89%

76.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Vmware	Gemfire	>= 9.7.0, < 9.7.6
Vmware	Gemfire	>= 9.8.0, < 9.8.7
Vmware	Gemfire	>= 9.9.0, < 9.9.2
Vmware	Tanzu Gemfire For Virtual Machines	>= 1.10.0, < 1.10.2
Vmware	Tanzu Gemfire For Virtual Machines	>= 1.11.0, < 1.11.1

References

https://tanzu.vmware.com/security/cve-2020-5396Vendor Advisory
https://tanzu.vmware.com/security/cve-2020-5396Vendor Advisory

Timeline

Published: Jul 31, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-5396?

How severe is CVE-2020-5396?

CVE-2020-5396 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.89% probability of exploitation in the next 30 days.

How do I fix CVE-2020-5396?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-5396?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST