CVE-2000-0453

Medium

Published: 18/05/2000(UTC)Updated: 16/06/2026(UTC)Translated: 18/06/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

High risk

2.96%

85th percentile - higher than 85% of all known CVEs

Summary

XFree86 versions 3.3.x and 4.0 allow a user to cause a denial of service by sending a malformed TCP packet with a negative counter value to port 6000.

Risk Assessment

The organization may experience service outages related to XFree86, leading to disruptions in system operations.

Recommendation

It is recommended to upgrade to the latest version of XFree86 and monitor network traffic on port 6000 to detect potential attacks.

Original NVD description (English source)

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.