CVE-2020-24231

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-10-05 · updated 2026-06-17

Description

Symmetric DS <3.12.0 uses mx4j to provide access to JMX over HTTP. mx4j, by default, has no auth and is available on all interfaces. An attacker can interact with JMX: get system info, and invoke MBean methods. It is possible to install additional MBeans from a remote host using MLet that leads to arbitrary code execution.

Affected products

Jumpmind Symmetricds: before 3.12.0 — fixed in 3.12.0

How to fix

Upgrade to a fixed version: Jumpmind Symmetricds 3.12.0. Check the vendor advisory for mitigations.

References

https://www.symmetricds.org/issues/view.php?id=4263
https://www.symmetricds.org/issues/view.php?id=4263

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