How severe is CVE-2012-0643?

CVE-2012-0643 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2012-0643 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-0643?

CVE-2012-0643 affects Apple Iphone Os. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2012-0643?

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

When was CVE-2012-0643 published?

CVE-2012-0643 was published on 2012-03-08 and last updated on 2026-06-16.

CVE-2012-0643

CVE-2012-0643 is a critical-severity vulnerability in Apple Iphone Os with a CVSS 2.0 base score of 9.3. 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: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Apple Iphone Os
Published: 2012-03-08
Last modified: 2026-06-16

Description

The kernel in Apple iOS before 5.1 does not properly handle debug system calls, which allows remote attackers to bypass sandbox restrictions and execute arbitrary code via a crafted program.

Frequently asked questions

What is CVE-2012-0643?: The kernel in Apple iOS before 5.1 does not properly handle debug system calls, which allows remote attackers to bypass sandbox restrictions and execute arbitrary code via a crafted program.
How severe is CVE-2012-0643?: CVE-2012-0643 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2012-0643 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-0643?: CVE-2012-0643 affects Apple Iphone Os. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2012-0643?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2012-0643 published?: CVE-2012-0643 was published on 2012-03-08 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*

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