CVE-2006-2421: Pragma Systems Fortressssh

High severity, CVSS 7.5. EPSS: 3.2% chance of exploitation in the next 30 days.

Stack-based buffer overflow in Pragma FortressSSH 4.0.7.20 allows remote attackers to execute arbitrary code via long SSH_MSG_KEXINIT messages, which may cause an overflow when being logged. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Affected products

• Pragma Systems Fortressssh: up to and including 4.0.7.20

Published 2006-05-17. Last modified 2026-06-16.