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CVE-2025-54539

Apache Activemq Nms Amqp insecure deserialization

9.8 CRITICALEPSS 2.09%
  1. Published16 Oct 2025

Description

A Deserialization of Untrusted Data vulnerability exists in the Apache ActiveMQ NMS AMQP Client. This issue affects all versions of Apache ActiveMQ NMS AMQP up to and including 2.3.0, when establishing connections to untrusted AMQP servers. Malicious servers could exploit unbounded deserialization logic present in the client to craft responses that may lead to arbitrary code execution on the client side. Although version 2.1.0 introduced a mechanism to restrict deserialization via allow/deny lists, the protection was found to be bypassable under certain conditions. In line with Microsoft’s deprecation of binary serialization in .NET 9, the project is evaluating the removal of .NET binary serialization support from the NMS API entirely in future releases. Mitigation and Recommendations: Users are strongly encouraged to upgrade to version 2.4.0 or later, which resolves the issue. Additionally, projects depending on NMS-AMQP should migrate away from .NET binary serialization as part of a long-term hardening strategy.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Apache Activemq Nms Amqp< 2.4.0

Remediation

Fixed in
Apache Activemq Nms Amqp≥ 2.4.0

References

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Frequently asked

Is CVE-2025-54539 being actively exploited?

CVE-2025-54539 is not in the CISA KEV catalog. Its EPSS exploit probability is 2.09%.

How severe is CVE-2025-54539?

CVE-2025-54539 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 2.09% probability of exploitation.

Which products are affected by CVE-2025-54539?

Affected products include Apache Activemq Nms Amqp.

How do I fix CVE-2025-54539?

Upgrade affected software to a fixed version, for example Apache Activemq Nms Amqp 2.4.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-54539 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.