CVE-2021-42976: Nomachine Enterprise Desktop

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

NoMachine Enterprise Desktop is affected by Buffer Overflow. IOCTL Handler 0x22001B in the NoMachine Enterprise Desktop above 4.0.346 and below 7.7.4 allow local attackers to execute arbitrary code in kernel mode or cause a denial of service (memory corruption and OS crash) via specially crafted I/O Request Packet.

Affected products

• Nomachine Enterprise Desktop: after 4.0.346, before 7.7.4 (fixed in 7.7.4)

Published 2021-12-07. Last modified 2026-06-17.