CVE-2006-6811
KsIRC 1.3.12 allows remote attackers to cause a denial of service (crash) via a long PRIVMSG...
KsIRC 1.3.12 allows remote attackers to cause a denial of service (crash) via a long PRIVMSG string when connecting to an Internet Relay Chat (IRC) server, which causes an assertion failure and results in a NULL pointer dereference. NOTE: this issue was originally reported as a buffer overflow.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
KsIRC 1.3.12 allows remote attackers to cause a denial of service (crash) via a long PRIVMSG string when connecting to an Internet Relay Chat (IRC) server, which causes an assertion failure and results in a NULL pointer dereference. NOTE: this issue was originally reported as a buffer overflow.
- Record
CVE-2006-6811- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:N/A:P - Weakness
- CWE-617
- Updated
- 2026-11-02
CVE List No score
KsIRC 1.3.12 allows remote attackers to cause a denial of service (crash) via a long PRIVMSG string when connecting to an Internet Relay Chat (IRC) server, which causes an assertion failure and results in a NULL pointer dereference. NOTE: this issue was originally reported as a buffer overflow.
- Record
CVE-2006-6811- Updated
- 2026-11-02
EUVDEUVD-2006-6794 No score
KsIRC 1.3.12 allows remote attackers to cause a denial of service (crash) via a long PRIVMSG string when connecting to an Internet Relay Chat (IRC) server, which causes an assertion failure and results in a NULL pointer dereference. NOTE: this issue was originally reported as a buffer overflow.
- Record
EUVD-2006-6794- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-rvgj-fpwg-2m28
KsIRC 1.3.12 allows remote attackers to cause a denial of service (crash) via a long PRIVMSG...
KsIRC 1.3.12 allows remote attackers to cause a denial of service (crash) via a long PRIVMSG string when connecting to an Internet Relay Chat (IRC) server, which causes an assertion failure and results in a NULL pointer dereference. NOTE: this issue was originally reported as a buffer overflow.
- Record
GHSA-rvgj-fpwg-2m28- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Weakness
- CWE-617
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | KsIRC 1.3.12 - 'PRIVMSG' Remote Buffer Overflow (PoC) | 2006-12-26 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2006-6811 is a medium vulnerability (CVSS 6.5) in Kde Ksirc, published December 29, 2006. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 10.6%, the 95th percentile. No source names a fixed version.
References
ubuntu.com/usn/usn-409-1
issues.rpath.com/browse/RPL-922
exploit-db.com/exploits/3023
vupen.com/english/advisories/2006/5199
securityfocus.com/archive/1/456379/100/0/threaded
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mandriva.com/security/advisories?name=MDKSA-2007:009
kde.org/info/security/advisory-20070109-1.txt
exchange.xforce.ibmcloud.com/vulnerabilities/31134
osvdb.org/33443
securitytracker.com/id?1017453
addict3d.org/index.php?page=viewarticle&trace=0&type=security&ID=8468
security.gentoo.org/glsa/glsa-200701-26.xml
nvd.nist.gov/vuln/detail/CVE-2006-6811
github.com/advisories/GHSA-rvgj-fpwg-2m28