How severe is CVE-2005-2509?

CVE-2005-2509 has a CVSS 2.0 base score of 2.1, rated low severity.

Is CVE-2005-2509 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-2509?

CVE-2005-2509 primarily affects Apple Mac Os X. In total, 61 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2005-2509?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2005-2509 published?

CVE-2005-2509 was published on 2005-08-19 and last updated on 2026-06-16.

CVE-2005-2509

CVE-2005-2509 is a low-severity vulnerability in Apple Mac Os X with a CVSS 2.0 base score of 2.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Low (CVSS 2.0 base score 2.1)
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Apple Mac Os X
Published: 2005-08-19
Last modified: 2026-06-16

Description

Unknown vulnerability in loginwindow in Mac OS X 10.4.2 and earlier, when Fast User Switching is enabled, allows attackers to log into other accounts if they know the passwords to at least two accounts.

Frequently asked questions

What is CVE-2005-2509?: Unknown vulnerability in loginwindow in Mac OS X 10.4.2 and earlier, when Fast User Switching is enabled, allows attackers to log into other accounts if they know the passwords to at least two accounts.
How severe is CVE-2005-2509?: CVE-2005-2509 has a CVSS 2.0 base score of 2.1, rated low severity.
Is CVE-2005-2509 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-2509?: CVE-2005-2509 primarily affects Apple Mac Os X. In total, 61 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2005-2509?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2005-2509 published?: CVE-2005-2509 was published on 2005-08-19 and last updated on 2026-06-16.

References

Affected products (61)

cpe:2.3:o:apple:mac_os_x:10.0:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.0.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.0.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.0.3:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.0.4:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.1.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.1.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.1.3:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.1.4:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.1.5:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.2.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.2.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.2.3:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.2.4:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.2.5:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.2.6:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.2.7:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.2.8:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.3:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.3.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.3.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.3.3:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.3.4:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.3.5:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.3.6:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.3.7:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.3.8:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.3.9:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.4:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.4.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.4.9:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.0:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.1.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.1.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.1.3:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.1.4:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.1.5:*:*:*:*:*:*:*

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