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Vulnerability record · CVE-2006-4126 · published 14 August 2006

CVE-2006-4126: Dconnect daemon vulnerability

Dconnect · Dconnect Daemon

The dc_chat function in cmd.dc.c in DConnect Daemon 0.7.0 and earlier allows remote attackers to cause a denial of service (application crash) by sending a client message before providing the nickname, which triggers a null pointer dereference.

5.0 CVSS 2.0 Medium EPSS 9.0% · top 4.9%
5.0CVSS 2.0 base score
9.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
18References, 6 tagged exploit
16 Jun 2026Last modified by NVD

Description

The dc_chat function in cmd.dc.c in DConnect Daemon 0.7.0 and earlier allows remote attackers to cause a denial of service (application crash) by sending a client message before providing the nickname, which triggers a null pointer dereference.

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

Affected products

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

References

LinkTags
http://secunia.com/advisories/21384 ExploitVendor Advisory
http://securityreason.com/securityalert/1377
http://securitytracker.com/id?1016641 Exploit
http://www.dc.ds.pg.gda.pl/ Patch
http://www.dc.ds.pg.gda.pl/?page=doc&doc=changelog
http://www.securityfocus.com/archive/1/442440/100/0/threaded
http://www.securityfocus.com/bid/19370 ExploitPatch
http://www.vupen.com/english/advisories/2006/3181
https://exchange.xforce.ibmcloud.com/vulnerabilities/28279
http://secunia.com/advisories/21384 ExploitVendor Advisory
http://securityreason.com/securityalert/1377
http://securitytracker.com/id?1016641 Exploit
http://www.dc.ds.pg.gda.pl/ Patch
http://www.dc.ds.pg.gda.pl/?page=doc&doc=changelog
http://www.securityfocus.com/archive/1/442440/100/0/threaded
http://www.securityfocus.com/bid/19370 ExploitPatch
http://www.vupen.com/english/advisories/2006/3181
https://exchange.xforce.ibmcloud.com/vulnerabilities/28279

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Related vulnerabilities

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

7.5CVE-2006-4125Dconnect daemon vulnerabilityStack-based buffer overflow in main.c in DConnect Daemon 0.7.0 and earlier allows remote attackers to execute arbitrary code via a large nickname, wh…EPSS 8.0%4.6CVE-2006-4127Dconnect daemon vulnerabilityMultiple format string vulnerabilities in DConnect Daemon 0.7.0 and earlier allow remote administrators to execute arbitrary code via format string s…EPSS 2.2%

Source: NIST National Vulnerability Database (record CVE-2006-4126), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.