CVE-2026-17568 in Server
Summary
by MITRE • 07/27/2026
Improper access control in the role membership management endpoint in Devolutions Server allows an authenticated non-administrative user holding the user-group membership management permission to escalate privileges to administrator via a crafted API request.
This issue affects :
* Devolutions Server 2026.2.4.0 through 2026.2.12.0 * Devolutions Server 2026.1.23.0 and earlier
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 07/27/2026
This vulnerability represents a critical improper access control flaw in Devolutions Server's role membership management endpoint that enables privilege escalation from regular user to administrator level. The issue stems from insufficient authorization checks within the API endpoint responsible for managing user-group memberships, allowing authenticated users with minimal permissions to manipulate administrative roles through carefully crafted requests. The vulnerability affects specific version ranges including 2026.2.4.0 through 2026.2.12.0 and 2026.1.23.0 and earlier versions, indicating a widespread impact across multiple release streams.
The technical implementation flaw manifests when an authenticated user with user-group membership management permission attempts to modify role assignments through the API endpoint. This vulnerability directly maps to CWE-285 which addresses improper authorization in software systems, specifically targeting the failure to properly validate permissions before executing administrative operations. The flaw allows for privilege escalation because the system does not adequately verify whether the requesting user possesses sufficient privileges to perform the requested administrative action, creating a path for unauthorized elevation of access rights.
Operationally this vulnerability presents a severe risk to organizations relying on Devolutions Server for identity and access management. An attacker with basic user credentials and the specific group membership permission could potentially gain full administrative control over the server, compromising all managed accounts and sensitive data within the system. The impact extends beyond simple privilege escalation as it enables potential lateral movement within the organization's infrastructure, allowing attackers to establish persistent access and escalate their compromise further. This vulnerability particularly affects environments where Devolutions Server serves as a central authentication and authorization platform for multiple applications and services.
Mitigation strategies should focus on immediate patching of affected versions to address the core authorization flaw in the role membership management endpoint. Organizations must also implement additional monitoring and logging around API endpoints handling administrative functions to detect anomalous privilege escalation attempts. Network segmentation and principle of least privilege should be enforced to limit access to administrative APIs, while regular security audits should verify proper implementation of authorization checks throughout the application. The vulnerability aligns with ATT&CK technique T1078 which covers valid accounts and privilege escalation through unauthorized access to administrative functions. Additionally, implementing automated security scanning tools that can detect improper access control patterns in API endpoints will help identify similar vulnerabilities across the organization's software portfolio.