CVE-2003-0071

What it is

The DEC UDK processing feature in the xterm terminal emulator in XFree86 4.2.99.4 and earlier allows attackers to cause a denial of service via a certain character escape sequence that causes the terminal to enter a tight loop.

At a glance

Exploitability

Can be exploited locally on the machine without logging in. Limited direct impact.

Exploit odds

0.4% chance of exploitation in the next 30 days (EPSS).

Fix

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

Timeline

1. 2003-03-03 05:00 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 22:01 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.4% in the next 30 days (EPSS).
• Severity: 2.1 LOW (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2003-03-03 05:00 UTC

Last modified

2026-06-16 22:01 UTC

Exploit probability

0.4% · EPSS, next 30 days

Record status

Modified

Affected

• xfree86 Project x11r6 4.0
• xfree86 Project x11r6 4.0.1
• xfree86 Project x11r6 4.0.3
• xfree86 Project x11r6 4.1.0
• xfree86 Project x11r6 4.2.0
• xfree86 Project x11r6 4.2.1

Attack profile CVSS 2.0 · 2.1

Attack vector

Local

Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

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-2003-0071.md and follow it. Check whether this project is affected by CVE-2003-0071. 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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