CVE-2018-3971: Sophos Hitmanpro.alert

High severity, CVSS 7.8. EPSS: 0.5% chance of exploitation in the next 30 days.

An exploitable arbitrary write vulnerability exists in the 0x2222CC IOCTL handler functionality of Sophos HitmanPro.Alert 3.7.6.744. A specially crafted IRP request can cause the driver to write data under controlled by an attacker address, resulting in memory corruption. An attacker can send IRP request to trigger this vulnerability.

Affected products

• Sophos Hitmanpro.alert: version 3.7.6.744 only

Published 2018-10-25. Last modified 2026-06-17.