CVE-1999-0990: Error messages generated by gdm with the VerboseAuth setting allows an attacker to identify valid users on a system.
Summary
Error messages generated by gdm with the VerboseAuth setting allows an attacker to identify valid users on a system.
Severity
UNKNOWN
Source Attribution
Source: NVD · Updated: 2026-08-21T04:30:51.930Z · 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.