Deserialization of Untrusted Data Affecting com.datadoghq:dd-java-agent package, versions [0.40.0,1.60.3)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published31 Mar 2026
- disclosed26 Mar 2026
- creditMohamed Amine
Introduced: 26 Mar 2026
CVE-2026-33728 (opens in a new tab)How to fix?
Upgrade com.datadoghq:dd-java-agent to version 1.60.3 or higher.
Overview
Affected versions of this package are vulnerable to Deserialization of Untrusted Data in the RMI integration. An attacker can execute arbitrary code with the privileges of the user running the instrumented JVM by sending specially crafted serialized data to a network-exposed JMX or RMI port.
Note:
This is only exploitable if the agent is attached as a Java agent on Java 16 or earlier, a JMX/RMI port is explicitly configured and network-reachable, and a gadget-chain-compatible library is present on the classpath.
Workaround
This vulnerability can be mitigated by setting the environment variable DD_INTEGRATION_RMI_ENABLED=false to disable the RMI integration.
Details
Serialization is a process of converting an object into a sequence of bytes which can be persisted to a disk or database or can be sent through streams. The reverse process of creating object from sequence of bytes is called deserialization. Serialization is commonly used for communication (sharing objects between multiple hosts) and persistence (store the object state in a file or a database). It is an integral part of popular protocols like Remote Method Invocation (RMI), Java Management Extension (JMX), Java Messaging System (JMS), Action Message Format (AMF), Java Server Faces (JSF) ViewState, etc.
Deserialization of untrusted data (CWE-502) is when the application deserializes untrusted data without sufficiently verifying that the resulting data will be valid, thus allowing the attacker to control the state or the flow of the execution.