CVE-1999-0656
The ugidd RPC interface, by design, allows remote attackers to enumerate valid usernames by...
The ugidd RPC interface, by design, allows remote attackers to enumerate valid usernames by specifying arbitrary UIDs that ugidd maps to local user and group names.
Exploit likelihood
What each source reports
NVD Score used
The ugidd RPC interface, by design, allows remote attackers to enumerate valid usernames by specifying arbitrary UIDs that ugidd maps to local user and group names.
- Record
CVE-1999-0656- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-16
- Updated
- 2026-11-02
CVE List No score
The ugidd RPC interface, by design, allows remote attackers to enumerate valid usernames by specifying arbitrary UIDs that ugidd maps to local user and group names.
- Record
CVE-1999-0656- Updated
- 2026-11-02
EUVDEUVD-1999-0639 No score
The ugidd RPC interface, by design, allows remote attackers to enumerate valid usernames by specifying arbitrary UIDs that ugidd maps to local user and group names.
- Record
EUVD-1999-0639- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-75cj-jpmc-wm6c No score
The ugidd RPC interface, by design, allows remote attackers to enumerate valid usernames by...
The ugidd RPC interface, by design, allows remote attackers to enumerate valid usernames by specifying arbitrary UIDs that ugidd maps to local user and group names.
- Record
GHSA-75cj-jpmc-wm6c- Updated
- 2026-11-02
OSVAZL-34842 No score
CVE-1999-0656 affecting package kernel for versions less than 6.6.35.1-4
The ugidd RPC interface, by design, allows remote attackers to enumerate valid usernames by specifying arbitrary UIDs that ugidd maps to local user and group names.
- Record
AZL-34842- Updated
- 2026-11-05
OSVAZL-6511 No score
CVE-1999-0656 affecting package kernel for versions less than 5.10.78.1-1
The ugidd RPC interface, by design, allows remote attackers to enumerate valid usernames by specifying arbitrary UIDs that ugidd maps to local user and group names.
- Record
AZL-6511- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | OSV | |
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-1999-0656 is a medium vulnerability (CVSS 5.0) in Linux Kernel, published January 1, 1999. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.55%, the 75th percentile. Fixed in kernel 6.6.35.1-4.