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Vulnerability record · CVE-2003-1000 · published 5 January 2004

CVE-2003-1000: Xchat null pointer dereference vulnerability

Xchat · Xchat

xchat 2.0.6 allows remote attackers to cause a denial of service (crash) via a passive DCC request with an invalid ID number, which causes a null dereference.

7.5 CVSS 3.1 High EPSS 2.6% · top 15.6% CWE-476 · NULL pointer dereference
7.5CVSS 3.1 base score, v2 5.0
2.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
16 Jun 2026Last modified by NVD

Description

xchat 2.0.6 allows remote attackers to cause a denial of service (crash) via a passive DCC request with an invalid ID number, which causes a null dereference.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://mail.nl.linux.org/xchat-announce/2003-12/msg00000.html Broken LinkPatchVendor Advisory
http://marc.info/?l=bugtraq&m=107152093419276&w=2 Mailing List
http://mail.nl.linux.org/xchat-announce/2003-12/msg00000.html Broken LinkPatchVendor Advisory
http://marc.info/?l=bugtraq&m=107152093419276&w=2 Mailing List

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2003-1000), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.