Is CVE-2012-0643 in the CISA KEV catalog?

No. CVE-2012-0643 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2012-0643?

CVE-2012-0643 has a CVSS v2 base score of 9.3 (HIGH).

What is the EPSS score for CVE-2012-0643?

CVE-2012-0643 has an EPSS score of 4.93% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2012-0643?

Upgrade iphone os to 5.1 or later.

CVE & CISA-KEV Catalog

CVE-2012-0643

HIGHEPSS 91th pctl

9.3

CVSS v2

NVD

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.

CWE-264Permissions, Privileges, and Access Controls

How to fix

Remediation Available

iphone osNVD

Affected:< 5.1Fixed in:5.1CVE-2012-0643derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

4.93%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Vendor Advisory3

Third-Party Advisory2

Related Vulnerabilities

Other CWE-264 (Permissions, Privileges, and Access Controls) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2012-1456	Medium	4.3	100%	-	-
CVE-2012-1459	Medium	4.3	100%	-	Fix
CVE-2012-1446	Medium	4.3	100%	-	-
CVE-2012-1443	Medium	4.3	100%	-	-
CVE-2012-1442	Medium	4.3	99%	-	-
CVE-2012-1457	Medium	4.3	98%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.