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CVE-2006-4403

14
FAUCET Score

CVE-2006-4403 describes a denial-of-service vulnerability affecting the FTP server in Apple Mac OS X 10.4.8 and earlier. An attacker can crash the FTP server by attempting a login with a valid username but incorrect password, also allowing for username enumeration. This vulnerability has a CVSS score of 4.0, indicating a medium severity, with a network attack vector, high access complexity, and partial impact on availability and confidentiality. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 10.4.8CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.0MEDIUM

AV:N/AC:H/Au:N/C:P/I:N/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
4.9
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.58%
Probability of exploitation in next 30 days
EPSS Percentile
88.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0358 is in the 83rd percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

docs.info.apple.com / article.html
lists.apple.com / archives/security-announce/2006/Nov/msg00001.html
secunia.com / advisories/23155
Vendor Advisory
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/30621
kb.cert.org / vuls/id/371648
US Government Resource
osvdb.org / 30734
securityfocus.com / bid/21335
us-cert.gov / cas/techalerts/TA06-333A.html
US Government Resource
vupen.com / english/advisories/2006/4750