"Microsoft has patched a vulnerability in the Windows Remote Access Connection Manager (RasMan) service that was being exploited to trigger denial-of-service (DoS) conditions on unpatched systems. If exploited, the flaw can cause the remote access service to crash, potentially interrupting VPN connectivity and affecting remote access for users and administrators. The vulnerability "... allows an unauthorized attacker to deny service locally," Microsoft said in its advisory."
"How the RasMan vulnerability works RasMan is a core Windows service that manages remote access connections, including VPN and legacy dial-up services. It plays a central role in enabling secure connectivity for remote employees, administrators, and systems that rely on tunneled network access. Because many organizations depend on VPN infrastructure to support hybrid work and distributed IT operations, disruptions to RasMan can have immediate operational consequences. CVE-2026-215"
Microsoft issued a patch for CVE-2026-215, a vulnerability in the Windows Remote Access Connection Manager (RasMan) service that could be exploited to cause denial-of-service conditions. Successful exploitation can crash the RasMan service and interrupt VPN connectivity, affecting remote users, administrators, and systems that depend on tunneled network access. The flaw allows an unauthorized local attacker to deny service, creating immediate operational impacts for organizations relying on VPN infrastructure for hybrid work and distributed IT operations. Applying the Microsoft update restores service integrity and prevents exploitation on unpatched systems.
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