CVE-1999-1555: Cheyenne Inoculan Anti-Virus Server

High severity, CVSS 7.2. EPSS: 1% chance of exploitation in the next 30 days.

Cheyenne InocuLAN Anti-Virus Server in Inoculan 4.0 before Service Pack 2 creates an update directory with "EVERYONE FULL CONTROL" permissions, which allows local users to cause Inoculan's antivirus update feature to install a Trojan horse dll.

Affected products

• Cheyenne Inoculan Anti-Virus Server: up to and including 4.0

Published 1998-06-11. Last modified 2026-06-16.