How severe is CVE-2011-3387?

CVE-2011-3387 has a CVSS 2.0 base score of 4.0, rated medium severity.

Is CVE-2011-3387 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-3387?

CVE-2011-3387 affects Ibm Java. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-3387?

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

When was CVE-2011-3387 published?

CVE-2011-3387 was published on 2011-09-02 and last updated on 2026-06-16.

CVE-2011-3387

CVE-2011-3387 is a medium-severity vulnerability in Ibm Java with a CVSS 2.0 base score of 4.0. 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 4.0)
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Ibm Java
Published: 2011-09-02
Last modified: 2026-06-16

Description

The class file parser in IBM Java 1.4.2 SR13 FP9 allows remote authenticated users to cause a denial of service (memory consumption or an infinite loop) via a crafted attribute length field in a class file, related to validation of a length field at the wrong time, a different vulnerability than CVE-2011-0311.

Frequently asked questions

What is CVE-2011-3387?: The class file parser in IBM Java 1.4.2 SR13 FP9 allows remote authenticated users to cause a denial of service (memory consumption or an infinite loop) via a crafted attribute length field in a class file, related to validation of a length field at the wrong time, a different vulnerability than CVE-2011-0311.
How severe is CVE-2011-3387?: CVE-2011-3387 has a CVSS 2.0 base score of 4.0, rated medium severity.
Is CVE-2011-3387 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-3387?: CVE-2011-3387 affects Ibm Java. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-3387?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-3387 published?: CVE-2011-3387 was published on 2011-09-02 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:ibm:java:1.4.2.13.9:*:*:*:*:*:*:*

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