CVE-2007-3661: Eltima Software Virtual Serial Port

Medium severity, CVSS 5.0. EPSS: 1.4% chance of exploitation in the next 30 days.

Eltima Software Virtual Serial Port (VSPAX) ActiveX control (VSPort.DLL) allows remote attackers to cause a denial of service via certain function calls, as demonstrated via the (1) Attach, (2) Write, and (3) WriteStr functions.

Affected products

• Eltima Software Virtual Serial Port: any version

Published 2007-07-10. Last modified 2026-06-16.