How severe is CVE-2008-2309?

CVE-2008-2309 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2008-2309 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-2309?

CVE-2008-2309 primarily affects Apple Mac Os X. In total, 30 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-2309?

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

When was CVE-2008-2309 published?

CVE-2008-2309 was published on 2008-07-01 and last updated on 2026-06-16.

CVE-2008-2309

CVE-2008-2309 is a medium-severity vulnerability in Apple Mac Os X with a CVSS 2.0 base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Apple Mac Os X
Published: 2008-07-01
Last modified: 2026-06-16

Description

Incomplete blacklist vulnerability in CoreTypes in Apple Mac OS X before 10.5.4 allows user-assisted remote attackers to execute arbitrary code via a (1) .xht or (2) .xhtm file, which does not trigger a "potentially unsafe" warning message in (a) the Download Validation feature in Mac OS X 10.4 or (b) the Quarantine feature in Mac OS X 10.5.

Frequently asked questions

What is CVE-2008-2309?: Incomplete blacklist vulnerability in CoreTypes in Apple Mac OS X before 10.5.4 allows user-assisted remote attackers to execute arbitrary code via a (1) .xht or (2) .xhtm file, which does not trigger a "potentially unsafe" warning message in (a) the Download Validation feature in Mac OS X 10.4 or (b) the Quarantine feature in Mac OS X 10.5.
How severe is CVE-2008-2309?: CVE-2008-2309 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2008-2309 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-2309?: CVE-2008-2309 primarily affects Apple Mac Os X. In total, 30 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-2309?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-2309 published?: CVE-2008-2309 was published on 2008-07-01 and last updated on 2026-06-16.

References

Affected products (30)

cpe:2.3:o:apple:mac_os_x:10.4.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.4.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.4.3:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.4.4:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.4.5:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.4.6:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.4.7:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.4.8:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.4.9:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.4.10:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.4.11:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.5:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.5.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.5.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.5.3:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.4.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.4.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.4.3:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.4.4:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.4.5:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.4.6:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.4.7:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.4.8:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.4.9:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.4.10:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.4.11:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.5:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.5.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.5.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.5.3:*:*:*:*:*:*:*

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