CVE-2021-42686: Accops Hyworks Windows Client

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

An Integer Overflow exists in Accops HyWorks Windows Client prior to v 3.2.8.200. The IOCTL Handler 0x22001B in the Accops HyWorks Windows Client prior to v 3.2.8.200 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

• Accops Hyworks Windows Client: before 3.2.8.200 (fixed in 3.2.8.200)

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