Devolutions Server OAuth Bypass

Devolutions Server versions 2026.1.11 and earlier allow authenticated remote attackers to bypass multi-factor authentication through improper validation of OAuth login requests, enabling account takeover without second-factor verification. CISA KEV status and exploit availability not confirmed at time of analysis.

Improper session code validation in Devolutions Server 2026.1.11 and earlier allows authenticated users to escalate privileges and impersonate other users, including administrators, by reusing session codes from external OAuth authentication flows. This authentication bypass affects all versions up to and including 2026.1.11 and requires an attacker to have valid credentials to exploit the vulnerability. No public exploit code or active exploitation has been confirmed at the time of analysis.