CVE-2025-62206 is an information disclosure vulnerability classified under CWE-200 affecting Microsoft Dynamics 365 (on-premises) version 9.1 and earlier (including 9.0). The vulnerability allows an unauthorized attacker to remotely disclose sensitive information over a network without requiring privileges, though user interaction is necessary. The CVSS v3.1 score is 6.5 (medium severity), reflecting a high confidentiality impact but no impact on integrity or availability. The attack vector is network-based with low complexity, meaning an attacker can exploit this flaw remotely with relative ease if a user interacts with a crafted request or payload. The vulnerability arises from improper access control or insufficient validation in the Dynamics 365 on-premises deployment, potentially exposing sensitive business data or personally identifiable information to unauthorized actors. No public exploits or active exploitation have been reported yet, but the exposure risk is significant given the widespread use of Dynamics 365 in enterprise environments. The lack of a patch link indicates that a fix may be pending or in development, emphasizing the need for interim mitigations. This vulnerability highlights the risks associated with on-premises deployments of complex enterprise software where network exposure and user interaction can lead to data leaks.

For European organizations, this vulnerability poses a significant risk to the confidentiality of sensitive business and customer data managed within Microsoft Dynamics 365 on-premises environments. Exposure of such information could lead to regulatory non-compliance, especially under GDPR, resulting in legal penalties and reputational damage. Industries such as finance, healthcare, manufacturing, and government agencies that rely heavily on Dynamics 365 for CRM and ERP functions are particularly vulnerable. The medium severity rating reflects the absence of integrity or availability impacts, but the high confidentiality impact means data breaches could occur without system disruption, making detection harder. Since exploitation requires user interaction, phishing or social engineering could be leveraged to trigger the vulnerability. The lack of known exploits in the wild currently reduces immediate risk, but the ease of network exploitation and the critical nature of the data involved make this a priority for security teams. European organizations with exposed on-premises Dynamics 365 installations should consider this a moderate to high risk until patched.

1. Limit network exposure of Microsoft Dynamics 365 (on-premises) servers by restricting access to trusted internal networks or VPNs only. 2. Implement strict firewall rules and network segmentation to isolate Dynamics 365 environments from general internet access. 3. Educate users about phishing and social engineering risks to reduce the likelihood of user interaction exploitation. 4. Monitor network traffic and logs for unusual access patterns or data exfiltration attempts related to Dynamics 365 services. 5. Apply principle of least privilege for user accounts interacting with Dynamics 365 to minimize potential data exposure. 6. Regularly check for and apply official Microsoft patches or security updates addressing CVE-2025-62206 as soon as they become available. 7. Consider deploying web application firewalls (WAF) or intrusion detection/prevention systems (IDS/IPS) to detect and block suspicious requests targeting Dynamics 365. 8. Conduct internal security assessments and penetration tests focusing on Dynamics 365 on-premises deployments to identify and remediate configuration weaknesses.