CVE-2003-0661

What it is

The NetBT Name Service (NBNS) for NetBIOS in Windows NT 4.0, 2000, XP, and Server 2003 may include random memory in a response to a NBNS query, which could allow remote attackers to obtain sensitive information.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

25.2% chance of exploitation in the next 30 days (EPSS). Higher than most.

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2003-10-20 04:00 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: 25.2% in the next 30 days (EPSS).
• Severity: 5.0 MEDIUM (CVSS).
• Fix: none linked yet, which raises it.

Details

Published

2003-10-20 04:00 UTC

Last modified

2026-06-16 22:02 UTC

Exploit probability

25.2% · 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 · 5.0

Attack vector

Network

Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

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-2003-0661.md and follow it. Check whether this project is affected by CVE-2003-0661. 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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