How severe is CVE-2009-2476?

CVE-2009-2476 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2009-2476 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-2476?

CVE-2009-2476 primarily affects Sun Java Se. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-2476?

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-2009-2476 published?

CVE-2009-2476 was published on 2009-08-10 and last updated on 2026-06-16.

CVE-2009-2476

CVE-2009-2476 is a critical-severity vulnerability in Sun Java Se with a CVSS 2.0 base score of 10.0. 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-264.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Sun Java Se
Published: 2009-08-10
Last modified: 2026-06-16

Description

The Java Management Extensions (JMX) implementation in Sun Java SE 6 before Update 15, and OpenJDK, does not properly enforce OpenType checks, which allows context-dependent attackers to bypass intended access restrictions by leveraging finalizer resurrection to obtain a reference to a privileged object.

Frequently asked questions

What is CVE-2009-2476?: The Java Management Extensions (JMX) implementation in Sun Java SE 6 before Update 15, and OpenJDK, does not properly enforce OpenType checks, which allows context-dependent attackers to bypass intended access restrictions by leveraging finalizer resurrection to obtain a reference to a privileged object.
How severe is CVE-2009-2476?: CVE-2009-2476 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2009-2476 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-2476?: CVE-2009-2476 primarily affects Sun Java Se. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-2476?: 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-2009-2476 published?: CVE-2009-2476 was published on 2009-08-10 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:sun:java_se:*:14:*:*:*:*:*:*
cpe:2.3:a:sun:openjdk:*:*:*:*:*:*:*:*

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