CVE-1999-0995

High CVSS 7.8

Published 1999-12-16 · last changed 2026-06-16

The fix

We hold no Microsoft remediation data for CVE-1999-0995, 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

Windows NT Local Security Authority (LSA) allows remote attackers to cause a denial of service via malformed arguments to the LsaLookupSids function which looks up the SID, aka "Malformed Security Identifier Request."

Sources

NVD record for CVE-1999-0995

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