How severe is CVE-2009-1103?

CVE-2009-1103 has a CVSS 2.0 base score of 6.4, rated medium severity.

Is CVE-2009-1103 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-1103?

CVE-2009-1103 affects Sun Java. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-1103?

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

When was CVE-2009-1103 published?

CVE-2009-1103 was published on 2009-03-25 and last updated on 2026-06-16.

CVE-2009-1103

CVE-2009-1103 is a medium-severity vulnerability in Sun Java with a CVSS 2.0 base score of 6.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 6.4)
EPSS exploit prediction: 5% (90th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Sun Java
Published: 2009-03-25
Last modified: 2026-06-16

Description

Unspecified vulnerability in the Java Plug-in in Java SE Development Kit (JDK) and Java Runtime Environment (JRE) 5.0 Update 17 and earlier; 6 Update 12 and earlier; 1.4.2_19 and earlier; and 1.3.1_24 and earlier allows remote attackers to access files and execute arbitrary code via unknown vectors related to "deserializing applets," aka CR 6646860.

Frequently asked questions

What is CVE-2009-1103?: Unspecified vulnerability in the Java Plug-in in Java SE Development Kit (JDK) and Java Runtime Environment (JRE) 5.0 Update 17 and earlier; 6 Update 12 and earlier; 1.4.2_19 and earlier; and 1.3.1_24 and earlier allows remote attackers to access files and execute arbitrary code via unknown vectors related to "deserializing applets," aka CR 6646860.
How severe is CVE-2009-1103?: CVE-2009-1103 has a CVSS 2.0 base score of 6.4, rated medium severity.
Is CVE-2009-1103 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-1103?: CVE-2009-1103 affects Sun Java. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-1103?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-1103 published?: CVE-2009-1103 was published on 2009-03-25 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:sun:java:*:*:*:*:*:*:*:*

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