CVE-2026-4927 is a security vulnerability identified in Devolutions Server versions 2026.1.6 through 2026.1.11. The vulnerability is categorized under CWE-201, which involves the insertion or exposure of sensitive information in data sent by the application. In this case, the flaw allows users who have user management privileges—typically administrators or delegated managers—to obtain other users' OTP keys used for multi-factor authentication (MFA). This is achieved through an authenticated API request that improperly exposes these secrets. The OTP keys are critical components of MFA, designed to provide an additional layer of security beyond passwords. Exposure of these keys undermines the integrity of the MFA process, potentially allowing attackers or malicious insiders to bypass MFA protections and gain unauthorized access to user accounts. The vulnerability requires authentication and elevated privileges, which limits the attack surface but does not eliminate risk, especially in environments where user management privileges are broadly assigned or compromised. No public exploits have been reported, and no CVSS score has been assigned as of the publication date. The vulnerability was reserved on March 26, 2026, and published on April 1, 2026. The absence of patch links suggests that fixes may be pending or that users should seek updates directly from Devolutions. This vulnerability poses a significant risk to the confidentiality and integrity of user authentication data within affected deployments.

The primary impact of CVE-2026-4927 is the compromise of MFA OTP keys, which can lead to unauthorized access to user accounts despite MFA protections. This undermines the security posture of organizations relying on Devolutions Server for credential and session management. Attackers or malicious insiders with user management privileges can retrieve OTP secrets, enabling them to impersonate users, bypass MFA, and escalate privileges. This can facilitate lateral movement within networks, data exfiltration, and disruption of services. The vulnerability affects the confidentiality and integrity of authentication mechanisms but does not directly impact availability. Organizations with broad user management privileges or insufficient internal controls are at higher risk. The lack of known exploits in the wild reduces immediate threat but does not preclude targeted attacks. The scope is limited to environments using affected versions of Devolutions Server, but given the critical role of MFA in securing access, the potential damage is high. This vulnerability could be leveraged in espionage, insider threats, or ransomware campaigns where MFA bypass is a valuable asset.

To mitigate CVE-2026-4927, organizations should immediately review and restrict user management privileges to the minimum necessary personnel, enforcing strict role-based access controls. Monitor and audit API usage related to user management functions to detect anomalous access patterns. Implement network segmentation and strong internal controls to limit the exposure of Devolutions Server management interfaces. Since no official patches are currently linked, contact Devolutions support for guidance on available updates or workarounds. Consider temporarily disabling or limiting the MFA management API endpoints if feasible. Enhance logging and alerting on any access to MFA-related data. Educate administrators on the sensitivity of MFA secrets and enforce multi-person approval for critical user management actions. Plan for rapid deployment of patches once released and conduct vulnerability scans to identify affected instances. Additionally, consider integrating external MFA solutions that do not expose OTP keys within the server environment to reduce risk.