CVE-2020-5396

JMX Insecure Default Configuration in GemFire

HIGH

8.8

CVSS Score

Published: July 31, 2020 at 07:40 PM UTC

Updated: June 17, 2026 at 03:21 AM UTC

3 products affected across 2 vendorsGemfireTanzu Gemfire for Virtual MachinesVMware GemFire

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Severity

HIGH8.8

Exploit prediction

EPSS 2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Gemfire · VMware

95%

9.7.0 ≤ v < 9.7.69.8.0 ≤ v < 9.8.79.9.0 ≤ v < 9.9.2

Affected range stops below 9.7.6, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.8.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.9.2, so it looks safe — our inference, not a vendor statement

Tanzu Gemfire for Virtual Machines · VMware

95%

1.10 ≤ v < 1.10.21.10.0 ≤ v < 1.10.21.11 ≤ v < 1.11.11.11.0 ≤ v < 1.11.11.10 1.11

Affected range stops below 1.10.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.11.1, so it looks safe — our inference, not a vendor statement

VMware GemFire · VMware Tanzu

60%

v < 9.10.09.7 ≤ v < 9.7.69.8 ≤ v < 9.8.79.9 ≤ v < 9.9.29.10 9.7 9.8 9.9

Affected range stops below 9.10.0, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.7.6, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.8.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.9.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

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

References (1)

x_refsource_CONFIRMVendor Advisory

Source: [email protected]

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

CVSS

8.8HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-284CWE-862

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