How severe is CVE-2010-1939?

CVE-2010-1939 has a CVSS 2.0 base score of 7.6, rated high severity.

Is CVE-2010-1939 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-1939?

CVE-2010-1939 affects Apple Safari. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2010-1939?

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-2010-1939 published?

CVE-2010-1939 was published on 2010-05-13 and last updated on 2026-06-16.

CVE-2010-1939

CVE-2010-1939 is a high-severity vulnerability in Apple Safari with a CVSS 2.0 base score of 7.6. Its EPSS exploit-prediction score of 15% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-399.

Key facts

Severity: High (CVSS 2.0 base score 7.6)
EPSS exploit prediction: 15% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Apple Safari
Published: 2010-05-13
Last modified: 2026-06-16

Description

Use-after-free vulnerability in Apple Safari 4.0.5 on Windows allows remote attackers to execute arbitrary code by using window.open to create a popup window for a crafted HTML document, and then calling the parent window's close method, which triggers improper handling of a deleted window object.

Frequently asked questions

What is CVE-2010-1939?: Use-after-free vulnerability in Apple Safari 4.0.5 on Windows allows remote attackers to execute arbitrary code by using window.open to create a popup window for a crafted HTML document, and then calling the parent window's close method, which triggers improper handling of a deleted window object.
How severe is CVE-2010-1939?: CVE-2010-1939 has a CVSS 2.0 base score of 7.6, rated high severity.
Is CVE-2010-1939 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-1939?: CVE-2010-1939 affects Apple Safari. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2010-1939?: 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-2010-1939 published?: CVE-2010-1939 was published on 2010-05-13 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:apple:safari:4.0.5:*:*:*:*:*:*:*

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