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CVE-2025-29953

Apache Activemq Nms Openwire insecure deserialization

9.8 CRITICALEPSS 2.05%
  1. Published18 Apr 2025

Description

Deserialization of Untrusted Data vulnerability in Apache ActiveMQ NMS OpenWire Client. This issue affects Apache ActiveMQ NMS OpenWire Client before 2.1.1 when performing connections to untrusted servers. Such servers could abuse the unbounded deserialization in the client to provide malicious responses that may eventually cause arbitrary code execution on the client. Version 2.1.0 introduced a allow/denylist feature to restrict deserialization, but this feature could be bypassed. The .NET team has deprecated the built-in .NET binary serialization feature starting with .NET 9 and suggests migrating away from binary serialization. The project is considering to follow suit and drop this part of the NMS API altogether. Users are recommended to upgrade to version 2.1.1, which fixes the issue. We also recommend to migrate away from relying on .NET binary serialization as a hardening method for the future.

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 Openwire< 2.1.1

Remediation

Fixed in
Apache Activemq Nms Openwire≥ 2.1.1

References

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Frequently asked

Is CVE-2025-29953 being actively exploited?

CVE-2025-29953 is not in the CISA KEV catalog. Its EPSS exploit probability is 2.05%.

How severe is CVE-2025-29953?

CVE-2025-29953 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 2.05% probability of exploitation.

Which products are affected by CVE-2025-29953?

Affected products include Apache Activemq Nms Openwire.

How do I fix CVE-2025-29953?

Upgrade affected software to a fixed version, for example Apache Activemq Nms Openwire 2.1.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-29953 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.