What is CVE-2009-3869?

CVE-2009-3869 is a vulnerability in Microsoft Windows, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2009-11-05.

Is CVE-2009-3869 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Microsoft Windows

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.

Vulnerability class: Buffer Overflow

Published 2009-11-05 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 9.3 (High). Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.654 (99.3th percentile), scored 2026-10-17.

High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.654 · newest: 0.654 · change: 0.000

Affected products

Microsoft Windows
Sun Java Se
Sun Jdk — versions 1.5.0, 1.6.0
Sun Jre — versions 1.5.0, 1.6.0, 1.4.2_1
Sun Sdk — versions 1.4.2_01, 1.4.2_1, 1.4.2_2
Sun Solaris

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

rapid7/metasploit-framework

References

marc.info/ (vendor-advisory)
oval.cisecurity.org/repository/search/definition/oval:org.mitre.oval:def:11262 (signature, vdb-entry)
www.securityfocus.com/bid/36881 (vdb-entry)
support.apple.com/kb/HT3970
marc.info/ (vendor-advisory)
support.apple.com/kb/HT3969
marc.info/ (vendor-advisory)
security.gentoo.org/glsa/glsa-200911-02.xml (vendor-advisory)
www.redhat.com/support/errata/RHSA-2009-1694.html (vendor-advisory)
oval.cisecurity.org/repository/search/definition/oval:org.mitre.oval:def:10741 (signature, vdb-entry)

Frequently asked questions

What is CVE-2009-3869?: CVE-2009-3869 is a vulnerability in Microsoft Windows, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2009-11-05.
Is CVE-2009-3869 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.