CVE-2010-3443

ctcphandler.cpp in Quassel before 0.6.3 and 0.7.x before 0.7.1 allows remote attackers to cause a denial of service (unresponsive IRC) via multiple Client-To-Client Protocol (CTCP) requests in a PRIVMSG message.

Published: 2013-11-23 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2010-3443 is rated Moderate Risk (48/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.98%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2010-3443

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.19% 1.98% +0.79%
2 2025-03-30 1.50% 1.19% -0.31%
3 2025-03-29 — 1.50% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2010-3443

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2010-3443

OS Trackers for CVE-2010-3443

vendor priority summary link
debian not yet assigned CVE-2010-3443 not yet assigned priority: Debian including 1 source packages (quassel), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2010-3443
gentoo normal CVE-2010-3443: 1 GLSA(s) (201311-03), 1 atom(s) (net-irc/quassel); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2010-3443
ubuntu medium CVE-2010-3443 medium priority: Ubuntu including 1 source packages (quassel), 6 status rows across 6 suites (hardy, lucid, maverick, natty, oneiric, upstream): not-affected 3, released 2, DNE 1. https://ubuntu.com/security/CVE-2010-3443

Affected software / configurations for CVE-2010-3443

Vendor Product Version Raw CPE
quassel-irc quassel_irc <= 0.6.2 cpe:2.3:a:quassel-irc:quassel_irc:*:*:*:*:*:*:*:*
quassel-irc quassel_irc 0.1.0 cpe:2.3:a:quassel-irc:quassel_irc:0.1.0:*:*:*:*:*:*:*
quassel-irc quassel_irc 0.3.0 cpe:2.3:a:quassel-irc:quassel_irc:0.3.0:*:*:*:*:*:*:*
quassel-irc quassel_irc 0.3.0.1 cpe:2.3:a:quassel-irc:quassel_irc:0.3.0.1:*:*:*:*:*:*:*
quassel-irc quassel_irc 0.3.0.2 cpe:2.3:a:quassel-irc:quassel_irc:0.3.0.2:*:*:*:*:*:*:*
quassel-irc quassel_irc 0.3.0.3 cpe:2.3:a:quassel-irc:quassel_irc:0.3.0.3:*:*:*:*:*:*:*
quassel-irc quassel_irc 0.3.1 cpe:2.3:a:quassel-irc:quassel_irc:0.3.1:*:*:*:*:*:*:*
quassel-irc quassel_irc 0.4.0 cpe:2.3:a:quassel-irc:quassel_irc:0.4.0:*:*:*:*:*:*:*
quassel-irc quassel_irc 0.4.1 cpe:2.3:a:quassel-irc:quassel_irc:0.4.1:*:*:*:*:*:*:*
quassel-irc quassel_irc 0.4.2 cpe:2.3:a:quassel-irc:quassel_irc:0.4.2:*:*:*:*:*:*:*
quassel-irc quassel_irc 0.4.3 cpe:2.3:a:quassel-irc:quassel_irc:0.4.3:*:*:*:*:*:*:*
quassel-irc quassel_irc 0.5.0 cpe:2.3:a:quassel-irc:quassel_irc:0.5.0:*:*:*:*:*:*:*
quassel-irc quassel_irc 0.6.1 cpe:2.3:a:quassel-irc:quassel_irc:0.6.1:*:*:*:*:*:*:*
quassel-irc quassel_irc 0.7.0 cpe:2.3:a:quassel-irc:quassel_irc:0.7.0:*:*:*:*:*:*:*
canonical ubuntu_linux 9.04 cpe:2.3:o:canonical:ubuntu_linux:9.04:*:*:*:*:*:*:*
canonical ubuntu_linux 9.10 cpe:2.3:o:canonical:ubuntu_linux:9.10:*:*:*:*:*:*:*
canonical ubuntu_linux 10.04 cpe:2.3:o:canonical:ubuntu_linux:10.04:-:lts:*:*:*:*:*

References for CVE-2010-3443

cvelogic Threat Intelligence