What’s Vulnerable › Vulnerabilities

CVE-2000-0453

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2000-05-18 · updated 2026-06-16

Description

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.

Affected products

Xfree86 Project X11R6: 3.3.5, 3.3.6, 4.0

References

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