CVE-1999-1417: Inso ANSWERBOOK2

High severity, CVSS 7.5. EPSS: 1.9% chance of exploitation in the next 30 days.

Format string vulnerability in AnswerBook2 (AB2) web server dwhttpd 3.1a4 allows remote attackers to cause a denial of service and possibly execute arbitrary commands via encoded % characters in an HTTP request, which is improperly logged.

Affected products

• Inso ANSWERBOOK2: any version

Published 1998-08-23. Last modified 2026-06-16.