CVE-2009-3864

CVE-2009-3864 is a high-severity vulnerability in Sun Jdk with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 22% places it in the 97th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

The Java Update functionality in Java Runtime Environment (JRE) in Sun Java SE in JDK and JRE 5.0 before Update 22 and JDK and JRE 6 before Update 17, when a non-English version of Windows is used, does not retrieve available new JRE versions, which allows remote attackers to leverage vulnerabilities in older releases of this software, aka Bug Id 6869694.

Frequently asked questions

What is CVE-2009-3864?
The Java Update functionality in Java Runtime Environment (JRE) in Sun Java SE in JDK and JRE 5.0 before Update 22 and JDK and JRE 6 before Update 17, when a non-English version of Windows is used, does not retrieve available new JRE versions, which allows remote attackers to leverage vulnerabilities in older releases of this software, aka Bug Id 6869694.
How severe is CVE-2009-3864?
CVE-2009-3864 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2009-3864 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 22% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-3864?
CVE-2009-3864 primarily affects Sun Jdk. In total, 78 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-3864?
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-2009-3864 published?
CVE-2009-3864 was published on 2009-11-05 and last updated on 2026-06-16.

References

Affected products (78)

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