CVE-1999-0556
Two or more Unix accounts have the same UID.
10.0 High
Two or more Unix accounts have the same UID.
Exploit likelihood
1.89%Up 1.0 points since Feb 4, 2022
What each source reports
NVD Score used
Two or more Unix accounts have the same UID.
- Record
CVE-1999-0556- CVSS 2.0
- 10.0 High
AV:N/AC:L/Au:N/C:C/I:C/A:C - Updated
- 2026-11-02
CVE List No score
Two or more Unix accounts have the same UID.
- Record
CVE-1999-0556- Updated
- 2026-11-02
EUVDEUVD-1999-0545 No score
Two or more Unix accounts have the same UID.
- Record
EUVD-1999-0545- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-573h-p65m-cffp No score
Two or more Unix accounts have the same UID.
Two or more Unix accounts have the same UID.
- Record
GHSA-573h-p65m-cffp- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-1999-0556 is a high vulnerability (CVSS 10.0), published January 1, 1999. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.89%, the 79th percentile. No source names a fixed version.