CVE-2019-11868: Softether See.sys

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

See.sys, up to version 4.25, in SoftEther VPN Server versions 4.29 or older, allows a user to call an IOCTL specifying any kernel address to which arbitrary bytes are written to.

Affected products

• Softether See.sys: up to and including 4.25

Published 2019-07-29. Last modified 2026-06-17.