CVE-1999-1257

High CVSS 7.5

Published 1997-11-26 · last changed 2026-06-16

The fix

We hold no Microsoft remediation data for CVE-1999-1257, which normally means it is not a Windows CVE. For non-Microsoft software the fix is the vendor's own updated release, and the affected versions are listed below.

What it is

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).

Sources

NVD record for CVE-1999-1257

CVSS vector: AV:N/AC:L/Au:N/C:P/I:P/A:P