External risk intelligence

Dynamics OmniChannel SDK Improper Authorization Privilege Escalation

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2025-64655

The vulnerability affects a software development kit (SDK) component. SDKs are typically integrated into custom applications rather than deployed as standalone internet-facing services. While the resulting application might be internet-facing, the SDK component itself is not inherently a public-facing edge service, making internet reachability dependent on the specific implementation.

Microsoft Dynamics Omnichannel Sdk Storage Containers

Halo Surface Signal: 3 out of 5 — possibly public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

This critical vulnerability in Microsoft Dynamics OmniChannel SDK Storage Containers could allow an unauthorized attacker to gain elevated privileges over a network. The issue stems from improper authorization within the SDK, potentially impacting systems that utilize this component. The primary concern is to confirm if this specific technology is in use within our environment.

Unauthorized access can elevate system privileges.
Crucial to confirm if Dynamics OmniChannel SDK is used.
Understand potential impact on unauthorized access.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by sending specially crafted requests over a network to a vulnerable Dynamics OmniChannel SDK Storage Container. This unauthorized access bypasses proper authorization checks, potentially allowing the attacker to gain elevated privileges within the system. Such a privilege escalation could lead to significant compromise of system integrity and data confidentiality.

No prior access required.
Triggered by unauthorized network requests.
Risk of privilege escalation.

Live Threat

Current exploitation, exposure, and threat context

Improper authorization in Dynamics OmniChannel SDK Storage Containers could allow an unauthenticated attacker to elevate privileges across a network. This means an attacker could potentially gain higher access than intended on systems using the SDK.

System data and service behavior.
Network access allows unauthorized privilege escalation.
Compromised system integrity and confidentiality.

Operational Fix

Recommended remediation, mitigation, and detection steps

The Dynamics OmniChannel SDK Storage Containers vulnerability, allowing unauthorized privilege escalation over a network, likely impacts application owners and platform teams responsible for integrating and managing these SDKs. The first practical step is to identify all instances of the affected SDK within your environment, determine their business criticality and network exposure, and then confirm the accountable owner for remediation planning.

Application owners must own the issue.
Verify SDK reachability and business criticality.
Plan remediation based on confirmed risk.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

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Frequently asked questions

What is the Microsoft Dynamics OmniChannel SDK Storage Containers component?

This component is a software development kit (SDK) library provided by Microsoft. Developers integrate this SDK into custom applications to manage data storage and omnichannel communication workflows. Because it is a library rather than a standalone application, it functions as a backend building block within your own software projects, helping to organize how data is held and retrieved in complex service environments.

What does improper authorization mean for CVE-2025-64655?

This vulnerability is classified as CWE-285, which means the software fails to correctly verify the identity or permissions of a user or system. Because the SDK does not properly enforce these access controls, it mistakenly grants requests that should be denied. In the context of this CVE, this flaw allows an unauthenticated person to perform actions or access data they are not authorized to handle.

How is this privilege escalation vulnerability triggered?

An attacker triggers the flaw by sending specially crafted network requests directly to a system running the vulnerable SDK. The vulnerability does not require the attacker to have any existing credentials or prior access to the system. It is important to note that local, non-networked interactions or standard, non-malicious application traffic do not trigger this specific authorization bypass.

Is my system at risk if I use the Dynamics OmniChannel SDK?

Halo Surface Signal notes that since this is an SDK, it is not inherently a public-facing service. Your actual risk depends on how your team implemented the SDK within your custom applications. If your application exposes the SDK's storage container functions to the internet, your risk is higher. If the component is tucked away deep within an internal, protected network, the potential for unauthorized external access is significantly reduced.

What should I do if I find this SDK in my environment?

Your first step is to locate all applications using this specific SDK version and identify who owns or manages those projects. Once identified, work with those owners to assess whether the affected components are reachable over your network. You should prioritize these systems for review and plan to update the SDK or apply specific vendor configurations once Microsoft provides the necessary remediation guidance.

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-64655

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.