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CVE-2000-0453

MediumPublished

XFree86 3.3.x and 4.0 allows a user to cause a denial of service via a negative counter value in a malformed TCP packet that is sent to port 6000.

Published: Jul 12, 2000
Updated: Aug 8, 2024
Assigning CNA: mitre
Evidence observed: May 18, 2000

Primary CVSS

5.0/ 10Medium

nvd · CVSS 2.0

AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS probability estimate

3.0%

Low · next 30 days

Percentile: 86.6%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

XFree86 3.3.x and 4.0 allows a user to cause a denial of service via a negative counter value in a malformed TCP packet that is sent to port 6000.

Sources

XFree86 X11R6 3.3.5/3.3.6/4.0 Xserver - Denial of ServiceExploit
Chris Evans · linux · May 18, 2000

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