CVE-2025-29826 is a high-severity vulnerability identified in Microsoft Dataverse version 10.0, classified under CWE-280, which pertains to improper handling of insufficient permissions or privileges. This vulnerability allows an authorized attacker with limited privileges to elevate their permissions over a network. Specifically, the flaw arises from Microsoft Dataverse's failure to correctly enforce permission checks, enabling attackers who already have some level of access to escalate their privileges beyond their intended scope. The vulnerability is exploitable remotely (AV:N) with low attack complexity (AC:L), requiring the attacker to have some privileges (PR:L) and user interaction (UI:R). The scope remains unchanged (S:U), but the impact on confidentiality and integrity is high (C:H, I:H), while availability is not affected (A:N). No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability was published on May 13, 2025, and has been enriched by CISA, indicating recognition by US cybersecurity authorities. Microsoft Dataverse is a cloud-based data platform used for building and managing business applications, often integrated into Microsoft Power Platform and Dynamics 365 environments. Improper privilege handling in such a platform can lead to unauthorized data access, modification, or manipulation, potentially compromising sensitive business information and workflows.

For European organizations, this vulnerability poses a significant risk due to the widespread adoption of Microsoft Dataverse within enterprises leveraging Microsoft Power Platform and Dynamics 365 for business process automation, CRM, and data management. Successful exploitation could allow attackers to escalate privileges, leading to unauthorized access to sensitive corporate data, alteration of business-critical information, and potential disruption of automated workflows. This could result in data breaches affecting personal data protected under GDPR, leading to regulatory penalties and reputational damage. The network-based exploitability increases the risk of lateral movement within corporate networks, potentially enabling attackers to compromise broader IT infrastructure. Given the integration of Dataverse with other Microsoft services, the vulnerability could serve as a pivot point for more extensive attacks. The requirement for user interaction and existing privileges somewhat limits the attack surface but does not eliminate the threat, especially in environments with many users and complex permission structures.

European organizations should prioritize the following mitigation steps: 1) Conduct a thorough audit of Microsoft Dataverse permissions and roles to ensure the principle of least privilege is strictly enforced, minimizing the number of users with elevated privileges. 2) Monitor and restrict user interactions that could trigger privilege escalation, including implementing strict controls on workflows and automation that interact with Dataverse. 3) Apply network segmentation to limit access to Dataverse services only to trusted and necessary network segments, reducing exposure to potential attackers. 4) Implement enhanced logging and monitoring of privilege changes and access patterns within Dataverse to detect anomalous activities indicative of exploitation attempts. 5) Stay alert for official patches or updates from Microsoft and plan for rapid deployment once available. 6) Educate users about the risks of social engineering or phishing that could facilitate the required user interaction for exploitation. 7) Consider deploying additional security controls such as conditional access policies and multi-factor authentication to reduce the risk of unauthorized access. These steps go beyond generic advice by focusing on permission audits, network controls, and behavioral monitoring tailored to the specifics of this vulnerability.