How severe is CVE-2004-0921?

CVE-2004-0921 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2004-0921 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-0921?

CVE-2004-0921 primarily affects Apple Quicktime. In total, 35 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2004-0921?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2004-0921 published?

CVE-2004-0921 was published on 2005-01-27 and last updated on 2026-06-16.

CVE-2004-0921

CVE-2004-0921 is a high-severity vulnerability in Apple Quicktime with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Apple Quicktime
Published: 2005-01-27
Last modified: 2026-06-16

Description

AFP Server on Mac OS X 10.3.x to 10.3.5, when a guest has mounted an AFP volume, allows the guest to "terminate authenticated user mounts" via modified SessionDestroy packets.

Frequently asked questions

What is CVE-2004-0921?: AFP Server on Mac OS X 10.3.x to 10.3.5, when a guest has mounted an AFP volume, allows the guest to "terminate authenticated user mounts" via modified SessionDestroy packets.
How severe is CVE-2004-0921?: CVE-2004-0921 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2004-0921 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-0921?: CVE-2004-0921 primarily affects Apple Quicktime. In total, 35 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-0921?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2004-0921 published?: CVE-2004-0921 was published on 2005-01-27 and last updated on 2026-06-16.

References

Affected products (35)

cpe:2.3:a:apple:quicktime:5.0.2:*:*:*:*:*:*:*
cpe:2.3:a:apple:quicktime:6.0:*:*:*:*:*:*:*
cpe:2.3:a:apple:quicktime:6.1:*:*:*:*:*:*:*
cpe:2.3:a:apple:quicktime:6.5:*:*:*:*:*:*:*
cpe:2.3:a:apple:quicktime:6.5.1:*:*:*:*:*:*:*
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_server:10.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.2.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.2.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.2.3:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.2.4:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.2.5:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.2.6:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.2.7:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.2.8:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.3:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.3.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.3.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.3.3:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.3.4:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.3.5:*:*:*:*:*:*:*

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