UnrealIRCd 3.2.3 allows remote attackers to cause an unspecified denial of service by causing a linked server to send malformed TKL Q:Line…

published 2006-03-14 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-1218

cvss: 5.0; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 3.8%; EPSS 3.8% chance of exploitation in 30 days, percentile 90%
public exploits: 1; Exploit-DB

UnrealIRCd 3.2.3 allows remote attackers to cause an unspecified denial of service by causing a linked server to send malformed TKL Q:Line commands, as demonstrated by "TKL - q\x08Q *\x08PoC."

Patch / fix

links 3

forums.unrealircd.com/viewtopic.php?t=2985 patch
osvdb.org/23778 patch
secunia.com/advisories/19188 advisory

Timeline

2006-03-09 First public exploit (EDB-27407)
2006-03-14 Published

Exploit prediction

3.84% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

EDB-27407 UnrealIRCd 3.x - Remote Denial of Service dos, 2006-03-09
osvdb.org http://www.osvdb.org/23778 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P

References

forums.unrealircd.com /viewtopic.php?t=2985
patch
secunia.com /advisories/19188
third-party-advisory, patch, vendor-advisory
osvdb.org /23778
vdb-entry, exploit, patch
exchange.xforce.ibmcloud.com /vulnerabilities/25130
vdb-entry
securityfocus.com /bid/17057
vdb-entry
securityfocus.com /archive/1/427213/100/0/threaded
mailing-list
vupen.com /english/advisories/2006/0908
vdb-entry

Sources

CVE List CVE-2006-1214
NVD CVE-2006-1214

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary