How severe is CVE-2009-0011?

CVE-2009-0011 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-2009-0011 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0011?

CVE-2009-0011 primarily affects Apple Mac Os X. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-0011?

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-2009-0011 published?

CVE-2009-0011 was published on 2009-02-13 and last updated on 2026-06-16.

CVE-2009-0011

CVE-2009-0011 is a high-severity vulnerability in Apple Mac Os X with a CVSS 2.0 base score of 7.2. 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: High (CVSS 2.0 base score 7.2)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Apple Mac Os X
Published: 2009-02-13
Last modified: 2026-06-16

Description

Certificate Assistant in Apple Mac OS X 10.5.6 allows local users to overwrite arbitrary files via unknown vectors related to an "insecure file operation" on a temporary file.

Frequently asked questions

What is CVE-2009-0011?: Certificate Assistant in Apple Mac OS X 10.5.6 allows local users to overwrite arbitrary files via unknown vectors related to an "insecure file operation" on a temporary file.
How severe is CVE-2009-0011?: CVE-2009-0011 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-2009-0011 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-0011?: CVE-2009-0011 primarily affects Apple Mac Os X. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-0011?: 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-2009-0011 published?: CVE-2009-0011 was published on 2009-02-13 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:o:apple:mac_os_x:10.5.6:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.5.6:*:*:*:*:*:*:*

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