Is CVE-2010-1939 in the CISA KEV catalog?

No. CVE-2010-1939 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2010-1939?

CVE-2010-1939 has a CVSS v2 base score of 7.6 (HIGH).

What is the EPSS score for CVE-2010-1939?

CVE-2010-1939 has an EPSS score of 14.71% (96th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2010-1939

HIGHEPSS 96th pctl

7.6

CVSS v2

NVD

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.

CWE-399

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

14.71%probability of exploitation in 30 days

96thpercentile

Very high risk: more likely to be exploited than 96% of all known CVEs.

References

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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.