CVE-2003-0659

What it is

Buffer overflow in a function in User32.dll on Windows NT through Server 2003 allows local users to execute arbitrary code via long (1) LB_DIR messages to ListBox or (2) CB_DIR messages to ComboBox controls in a privileged application.

At a glance

Exploitability

Can be exploited locally on the machine without logging in. High risk of data exposure, data tampering, service disruption.

Exploit odds

43.0% chance of exploitation in the next 30 days (EPSS). Higher than most.

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2003-11-17 05:00 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 22:02 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 43.0% in the next 30 days (EPSS).
• Severity: 7.2 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2003-11-17 05:00 UTC

Last modified

2026-06-16 22:02 UTC

Exploit probability

43.0% · EPSS, next 30 days

Record status

Modified

Affected

• Microsoft Windows 2000
• Microsoft Windows 2003 Server Enterprise
• Microsoft Windows 2003 Server enterprise_64-bit
• Microsoft Windows 2003 Server r2
• Microsoft Windows 2003 Server Standard
• Microsoft Windows 2003 Server Web
• Microsoft Windows Nt 4.0
• Microsoft Windows Xp

Attack profile CVSS 2.0 · 7.2

Attack vector

Local

Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2003-0659.md and follow it. Check whether this project is affected by CVE-2003-0659. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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