CVE-1999-1257: Xyplex Maxserver Xyplex Terminal Server

High severity, CVSS 7.5. EPSS: 1.6% chance of exploitation in the next 30 days.

Xyplex terminal server 6.0.1S1, and possibly other versions, allows remote attackers to bypass the password prompt by entering (1) a CTRL-Z character, or (2) a ? (question mark).

Affected products

• Xyplex Maxserver Xyplex Terminal Server: up to and including 6.0.2_s4; version 6.0.1_s1 only

Published 1997-11-26. Last modified 2026-06-16.