How severe is CVE-2006-3946?

CVE-2006-3946 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2006-3946 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-2006-3946?

CVE-2006-3946 primarily affects Apple Safari. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-3946?

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-2006-3946 published?

CVE-2006-3946 was published on 2006-07-31 and last updated on 2026-06-16.

CVE-2006-3946

CVE-2006-3946 is a high-severity vulnerability in Apple Safari 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. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Apple Safari
Published: 2006-07-31
Last modified: 2026-06-16

Description

WebCore in Apple Mac OS X 10.3.9 and 10.4 through 10.4.7 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via crafted HTML that triggers a "memory management error" in WebKit, possibly due to a buffer overflow, as originally reported for the KHTMLParser::popOneBlock function in Apple Safari 2.0.4 using Javascript that changes document.body.innerHTML within a DIV tag.

Frequently asked questions

What is CVE-2006-3946?: WebCore in Apple Mac OS X 10.3.9 and 10.4 through 10.4.7 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via crafted HTML that triggers a "memory management error" in WebKit, possibly due to a buffer overflow, as originally reported for the KHTMLParser::popOneBlock function in Apple Safari 2.0.4 using Javascript that changes document.body.innerHTML within a DIV tag.
How severe is CVE-2006-3946?: CVE-2006-3946 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2006-3946 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-2006-3946?: CVE-2006-3946 primarily affects Apple Safari. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-3946?: 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-2006-3946 published?: CVE-2006-3946 was published on 2006-07-31 and last updated on 2026-06-16.

References

Affected products (10)

cpe:2.3:a:apple:safari:2.0.4:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.3.9:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.4:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*

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