CVE-2003-0393: Privacyware Privatefirewall

Medium severity, CVSS 5.0. EPSS: 1.3% chance of exploitation in the next 30 days.

Privacyware Privatefirewall 3.0 does not block certain incoming packets when in "Filter Internet Traffic" or Deny Internet Traffic" modes, which allows remote attackers to identify running services via FIN scans or Xmas scans.

Affected products

• Privacyware Privatefirewall: version 3.0 only

Published 2003-07-02. Last modified 2026-06-16.