CVE-1999-0420

High CVSS 7.2

Published 1999-03-17 · last changed 2026-06-16

The fix

We hold no Microsoft remediation data for CVE-1999-0420, 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

umapfs allows local users to gain root privileges by changing their uid through a malicious mount_umap program.

Sources

NVD record for CVE-1999-0420

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