CVE-2025-62206 Overview
CVE-2025-62206 is an information disclosure vulnerability in Microsoft Dynamics 365 (on-premises). The flaw allows an unauthenticated attacker to obtain sensitive information over a network when a targeted user interacts with attacker-controlled content. Microsoft classifies this as an Exposure of Sensitive Information to an Unauthorized Actor issue [CWE-200]. The vulnerability affects on-premises deployments of Microsoft Dynamics 365 and was published to the National Vulnerability Database (NVD) on November 11, 2025. No public proof-of-concept exploit or in-the-wild exploitation has been reported at the time of writing.
Critical Impact
An unauthenticated network attacker can disclose confidential Dynamics 365 data by convincing a user to interact with crafted content, exposing business records handled by the CRM platform.
Affected Products
- Microsoft Dynamics 365 (on-premises)
- Deployments exposing Dynamics 365 web endpoints to network access
- Environments where users can be induced to interact with attacker-supplied links or content
Discovery Timeline
- 2025-11-11 - CVE-2025-62206 published to NVD
- 2025-11-11 - Microsoft published advisory in the Security Update Guide
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-62206
Vulnerability Analysis
The vulnerability is an Information Disclosure issue in Microsoft Dynamics 365 (on-premises). It maps to [CWE-200], Exposure of Sensitive Information to an Unauthorized Actor. Confidentiality impact is high, while integrity and availability are not affected. The attack is executed over the network without requiring prior authentication, but successful exploitation requires user interaction, such as clicking a crafted link or loading attacker-controlled content within the application context. Microsoft has not released technical internals of the flaw beyond the Security Update Guide entry. The EPSS probability at the time of writing is 0.865%, placing the CVE in roughly the 54th percentile for exploitation likelihood over the next 30 days.
Root Cause
The root cause is improper protection of sensitive data returned or rendered by the Dynamics 365 on-premises application. The service exposes information to a caller or context that should not have access, resulting in disclosure when a legitimate user is coerced into triggering the request. Microsoft has not disclosed whether the flaw resides in server-side response handling, client-side rendering, or an authentication check gap in a specific endpoint.
Attack Vector
The attack vector is Network with low complexity and no privileges required. Exploitation requires user interaction, so realistic attack scenarios involve phishing or malicious content designed to be opened by an authenticated Dynamics 365 user. Once the user interacts with the crafted payload, the attacker can retrieve sensitive information handled by the CRM instance, including customer records, opportunity data, or internal configuration details.
No verified public exploit code exists for CVE-2025-62206. Consult the Microsoft Security Update Guide for authoritative details.
Detection Methods for CVE-2025-62206
Indicators of Compromise
- Unusual outbound requests from Dynamics 365 users to unknown domains immediately after opening email links
- Unexpected access patterns to Dynamics 365 entities such as Account, Contact, or Lead records outside a user's normal scope
- Anomalous read volumes in Dynamics 365 audit logs from a single session within a short time window
Detection Strategies
- Enable and centrally collect Dynamics 365 audit logs, focusing on record read events and metadata retrieval
- Correlate email gateway telemetry with Dynamics 365 session activity to identify user-interaction-triggered exploitation attempts
- Inspect web proxy and reverse-proxy logs for anomalous query strings or referrers targeting Dynamics 365 endpoints
Monitoring Recommendations
- Alert on high-volume read operations against sensitive Dynamics 365 entities by individual user sessions
- Monitor for authentication events immediately followed by bulk data access from atypical geographic locations
- Track patch level of on-premises Dynamics 365 servers against the Microsoft advisory to confirm remediation status
How to Mitigate CVE-2025-62206
Immediate Actions Required
- Apply the security update referenced in the Microsoft Security Update Guide for CVE-2025-62206 to all on-premises Dynamics 365 servers
- Inventory all Dynamics 365 on-premises deployments and confirm build versions against Microsoft's fixed release
- Restrict network exposure of Dynamics 365 web endpoints to authenticated corporate networks or VPN where feasible
- Reinforce phishing awareness training given that exploitation requires user interaction
Patch Information
Microsoft has released a security update for Dynamics 365 (on-premises) documented in the Microsoft Security Update Guide. Administrators should review the advisory for the specific cumulative update or rollup applicable to their installed version and apply it through the standard Dynamics 365 servicing process.
Workarounds
- Limit Dynamics 365 access to trusted networks using firewall or reverse-proxy allowlists until the patch is deployed
- Enforce strict email filtering and URL rewriting to reduce the probability of users interacting with malicious content
- Apply least-privilege security roles in Dynamics 365 so that a compromised session exposes the smallest possible data set
# Verify installed Dynamics 365 on-premises version on the server
Get-ItemProperty "HKLM:\Software\Microsoft\MSCRM" | Select-Object CurrentVersion, ServerVersion
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
