How severe is CVE-2009-2419?

CVE-2009-2419 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2009-2419 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-2419?

CVE-2009-2419 primarily affects Apple Safari. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-2419?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-2419 published?

CVE-2009-2419 was published on 2009-07-09 and last updated on 2026-06-16.

CVE-2009-2419

CVE-2009-2419 is a medium-severity vulnerability in Apple Safari with a CVSS 2.0 base score of 4.3. 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-399.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 9% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Apple Safari
Published: 2009-07-09
Last modified: 2026-06-16

Description

Use-after-free vulnerability in the servePendingRequests function in WebCore in WebKit in Apple Safari 4.0 and 4.0.1 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted HTML document that references a zero-length .js file and the JavaScript reload function. NOTE: some of these details are obtained from third party information.

Frequently asked questions

What is CVE-2009-2419?: Use-after-free vulnerability in the servePendingRequests function in WebCore in WebKit in Apple Safari 4.0 and 4.0.1 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted HTML document that references a zero-length .js file and the JavaScript reload function. NOTE: some of these details are obtained from third party information.
How severe is CVE-2009-2419?: CVE-2009-2419 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2009-2419 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-2419?: CVE-2009-2419 primarily affects Apple Safari. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-2419?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-2419 published?: CVE-2009-2419 was published on 2009-07-09 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:apple:safari:4.0:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:4.0.1:*:*:*:*:*:*:*

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