CVE-1999-0821
FreeBSD seyon allows local users to gain privileges by providing a malicious program in the ...
FreeBSD seyon allows local users to gain privileges by providing a malicious program in the -emulator argument.
Exploit likelihood
What each source reports
NVD Score used
FreeBSD seyon allows local users to gain privileges by providing a malicious program in the -emulator argument.
- Record
CVE-1999-0821- CVSS 2.0
- 4.6 Medium
AV:L/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
FreeBSD seyon allows local users to gain privileges by providing a malicious program in the -emulator argument.
- Record
CVE-1999-0821- Updated
- 2026-11-02
EUVDEUVD-1999-0802 No score
FreeBSD seyon allows local users to gain privileges by providing a malicious program in the -emulator argument.
- Record
EUVD-1999-0802- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-27fc-7vgc-cg5g No score
FreeBSD seyon allows local users to gain privileges by providing a malicious program in the ...
FreeBSD seyon allows local users to gain privileges by providing a malicious program in the -emulator argument.
- Record
GHSA-27fc-7vgc-cg5g- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | FreeBSD 3.3 - Seyon SetGID Dialer | 1999-12-01 |
| Exploit-DB | Seyon 2.1 rev. 4b i586-Linux (RedHat 4.0/5.1) - Local Overflow | 2001-01-15 |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-1999-0821 is a medium vulnerability (CVSS 4.6) in Freebsd, published November 8, 1999. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.77%, the 55th percentile. No source names a fixed version.