CVE-1999-1231: ssh 2.0.12, and possibly other versions, allows valid user names to attempt to enter the correct password multiple times

Published n/a Updated 2026-08-21T04:30:46.969Z

Summary

ssh 2.0.12, and possibly other versions, allows valid user names to attempt to enter the correct password multiple times, but only prompts an invalid user name for a password once, which allows remote attackers to determine user account names on the server.

Severity

UNKNOWN

Source Attribution

Source: NVD · Updated: 2026-08-21T04:30:46.969Z · Confidence: high

Impact

Based on CVSS vector: n/a — assess confidentiality, integrity, and availability impact via the official vector documentation.

Affected Software

Fix

Upgrade affected software to the fixed version identified above. Apply vendor patches and monitor advisories before exposed systems go unpatched.

References