CVE-2009-3869

CVE-2009-3869 is a critical-severity vulnerability in Sun Jdk with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 65% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

• Severity: Critical (CVSS 2.0 base score 9.3)
• EPSS exploit prediction: 65% (99th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Sun Jdk
• Published: 2009-11-05
• Last modified: 2026-06-16

Description

Stack-based buffer overflow in the setDiffICM function in the Abstract Window Toolkit (AWT) in Java Runtime Environment (JRE) in Sun Java SE in JDK and JRE 5.0 before Update 22, JDK and JRE 6 before Update 17, SDK and JRE 1.3.x before 1.3.1_27, and SDK and JRE 1.4.x before 1.4.2_24 allows remote attackers to execute arbitrary code via a crafted argument, aka Bug Id 6872357.

Frequently asked questions

What is CVE-2009-3869?

Stack-based buffer overflow in the setDiffICM function in the Abstract Window Toolkit (AWT) in Java Runtime Environment (JRE) in Sun Java SE in JDK and JRE 5.0 before Update 22, JDK and JRE 6 before Update 17, SDK and JRE 1.3.x before 1.3.1_27, and SDK and JRE 1.4.x before 1.4.2_24 allows remote attackers to execute arbitrary code via a crafted argument, aka Bug Id 6872357.

How severe is CVE-2009-3869?

CVE-2009-3869 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2009-3869 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 65% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-3869?

CVE-2009-3869 primarily affects Sun Jdk. In total, 204 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-3869?

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-2009-3869 published?

CVE-2009-3869 was published on 2009-11-05 and last updated on 2026-06-16.

References

• http://java.sun.com/javase/6/webnotes/6u17.html
• http://lists.apple.com/archives/security-announce/2009/Dec/msg00000.html
• http://lists.apple.com/archives/security-announce/2009/Dec/msg00001.html
• http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00010.html
• http://marc.info/?l=bugtraq&m=126566824131534&w=2
• http://marc.info/?l=bugtraq&m=131593453929393&w=2
• http://marc.info/?l=bugtraq&m=134254866602253&w=2
• http://secunia.com/advisories/37231
• http://secunia.com/advisories/37239
• http://secunia.com/advisories/37386
• http://secunia.com/advisories/37581
• http://secunia.com/advisories/37841
• http://security.gentoo.org/glsa/glsa-200911-02.xml
• http://securitytracker.com/id?1023132
• http://sunsolve.sun.com/search/document.do?assetkey=1-66-270474-1
• http://support.apple.com/kb/HT3969
• http://support.apple.com/kb/HT3970
• http://www.mandriva.com/security/advisories?name=MDVSA-2010:084
• http://www.oracle.com/technetwork/topics/security/cpujan2010-084891.html
• http://www.redhat.com/support/errata/RHSA-2009-1694.html
• http://www.securityfocus.com/bid/36881
• http://www.vupen.com/english/advisories/2009/3131
• http://zerodayinitiative.com/advisories/ZDI-09-078/
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10741
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11262
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7400
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8566

Affected products (204)

• cpe:2.3:a:sun:jdk:1.5.0:update_1:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.5.0:update_10:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.5.0:update_11:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.5.0:update_12:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.5.0:update_13:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.5.0:update_14:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.5.0:update_15:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.5.0:update_16:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.5.0:update_17:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.5.0:update_18:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.5.0:update_19:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.5.0:update_2:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.5.0:update_20:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.5.0:update_21:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.5.0:update_3:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.5.0:update_4:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.5.0:update_5:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.5.0:update_6:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.5.0:update_7:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.5.0:update_8:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.5.0:update_9:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.6.0:update_1:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.6.0:update_10:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.6.0:update_11:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.6.0:update_12:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.6.0:update_13:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.6.0:update_14:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.6.0:update_15:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.6.0:update_16:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.6.0:update_3:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.6.0:update_4:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.6.0:update_5:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.6.0:update_6:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.6.0:update_7:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.6.0:update_8:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:1.6.0:update_9:*:*:*:*:*:*
• cpe:2.3:a:sun:jre:1.5.0:update_1:*:*:*:*:*:*
• cpe:2.3:a:sun:jre:1.5.0:update_11:*:*:*:*:*:*
• cpe:2.3:a:sun:jre:1.5.0:update_12:*:*:*:*:*:*
• cpe:2.3:a:sun:jre:1.5.0:update_13:*:*:*:*:*:*

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