CVE-2006-4403

Mac Os X vulnerability

CVSS

4.0

EPSS

3.6%

EPSS pct

88th

Exploited

No known

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.

Affected vendor

Apple

Affected product

Mac Os X

CVSS vector

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

Published

2006-11-30

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality, partial impact to availability.

Its EPSS score of 3.6% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2006-4403

Confirm whether Apple Mac Os X is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2006-4403.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2006-4403

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2006-4403 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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