CVE-2006-4403
The FTP server in Apple Mac OS X 10.4.8 and earlier, when FTP Access is enabled, will crash when...
The FTP server in Apple Mac OS X 10.4.8 and earlier, when FTP Access is enabled, will crash when a login failure occurs with a valid user name, which allows remote attackers to cause a denial of service (crash) and enumerate valid usernames.
Exploit likelihood
What each source reports
NVD Score used
The FTP server in Apple Mac OS X 10.4.8 and earlier, when FTP Access is enabled, will crash when a login failure occurs with a valid user name, which allows remote attackers to cause a denial of service (crash) and enumerate valid usernames.
- Record
CVE-2006-4403- CVSS 2.0
- 4.0 Medium
AV:N/AC:H/Au:N/C:P/I:N/A:P - Updated
- 2026-11-02
CVE List No score
The FTP server in Apple Mac OS X 10.4.8 and earlier, when FTP Access is enabled, will crash when a login failure occurs with a valid user name, which allows remote attackers to cause a denial of service (crash) and enumerate valid usernames.
- Record
CVE-2006-4403- Updated
- 2026-11-02
EUVDEUVD-2006-4391 No score
The FTP server in Apple Mac OS X 10.4.8 and earlier, when FTP Access is enabled, will crash when a login failure occurs with a valid user name, which allows remote attackers to cause a denial of service (crash) and enumerate valid usernames.
- Record
EUVD-2006-4391- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-46x7-8pwm-5h5x No score
The FTP server in Apple Mac OS X 10.4.8 and earlier, when FTP Access is enabled, will crash when...
The FTP server in Apple Mac OS X 10.4.8 and earlier, when FTP Access is enabled, will crash when a login failure occurs with a valid user name, which allows remote attackers to cause a denial of service (crash) and enumerate valid usernames.
- Record
GHSA-46x7-8pwm-5h5x- Updated
- 2026-11-02
Affected products
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-2006-4403 is a medium vulnerability (CVSS 4.0) in Apple Mac Os X, published November 30, 2006. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.73%, the 89th percentile. No source names a fixed version.