How severe is CVE-2010-3803?

CVE-2010-3803 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2010-3803 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-3803?

CVE-2010-3803 primarily affects Apple Safari. In total, 63 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-3803?

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-2010-3803 published?

CVE-2010-3803 was published on 2010-11-22 and last updated on 2026-06-16.

CVE-2010-3803

CVE-2010-3803 is a critical-severity vulnerability in Apple Safari 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-189.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-189
Affected product: Apple Safari
Published: 2010-11-22
Last modified: 2026-06-16

Description

Integer overflow in WebKit in Apple Safari before 5.0.3 on Mac OS X 10.5 through 10.6 and Windows, and before 4.1.3 on Mac OS X 10.4, allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted string.

Frequently asked questions

What is CVE-2010-3803?: Integer overflow in WebKit in Apple Safari before 5.0.3 on Mac OS X 10.5 through 10.6 and Windows, and before 4.1.3 on Mac OS X 10.4, allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted string.
How severe is CVE-2010-3803?: CVE-2010-3803 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2010-3803 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-3803?: CVE-2010-3803 primarily affects Apple Safari. In total, 63 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-3803?: 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-2010-3803 published?: CVE-2010-3803 was published on 2010-11-22 and last updated on 2026-06-16.

References

Affected products (63)

cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:5.0:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:5.0.1:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.0:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.0:beta:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.0:beta2:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.0.0b1:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.0.0b2:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.0.3:85.8:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.0.3:85.8.1:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.1:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.1.0:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.2:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.2.0:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.2.2:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.2.3:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.2.4:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.2.5:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.3:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.3.0:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.3.1:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.3.2:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.3.2:312.5:*:*:*:*:*:*
cpe:2.3:a:apple:safari:1.3.2:312.6:*:*:*:*:*:*
cpe:2.3:a:apple:safari:2:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:2.0:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:2.0.2:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:2.0.3:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:2.0.3:417.8:*:*:*:*:*:*
cpe:2.3:a:apple:safari:2.0.3:417.9:*:*:*:*:*:*
cpe:2.3:a:apple:safari:2.0.3:417.9.2:*:*:*:*:*:*
cpe:2.3:a:apple:safari:2.0.3:417.9.3:*:*:*:*:*:*

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