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CVE-2011-3354

18
FAUCET Score

CVE-2011-3354 describes a denial-of-service vulnerability in Quassel IRC versions prior to 0.7.3. A remote attacker can crash the application by sending a specially crafted Client-To-Client Protocol (CTCP) request. This vulnerability has a CVSS score of 5.0, indicating a medium severity, with low attack complexity and no authentication required, leading to a partial availability impact. While demonstrated in the wild in 2011, there is no public exploit code available, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.7.2CPE matchmatch criteria
cpe:2.3:a:quassel-irc:quassel:*:*:*:*:*:*:*:*
0.3.0CPE matchmatch criteria
cpe:2.3:a:quassel-irc:quassel:0.3.0:*:*:*:*:*:*:*
0.3.1CPE matchmatch criteria
cpe:2.3:a:quassel-irc:quassel:0.3.1:*:*:*:*:*:*:*
0.4.0CPE matchmatch criteria
cpe:2.3:a:quassel-irc:quassel:0.4.0:*:*:*:*:*:*:*
0.4.1CPE matchmatch criteria
cpe:2.3:a:quassel-irc:quassel:0.4.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.07%
Probability of exploitation in next 30 days
EPSS Percentile
79.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0207 is in the 68th percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

bugs.quassel-irc.org / projects/quassel-irc/repository/revisions/da215fcb9cd3096a3e223c87577d5d4ab8f8518b/diff/src/core/ctcpparser.cpp
Patch
osvdb.org / 75351
bugs.gentoo.org / show_bug.cgi
secunia.com / advisories/45970
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/69682
openwall.com / lists/oss-security/2011/09/08/7
openwall.com / lists/oss-security/2011/09/09/7
securityfocus.com / bid/49526
ubuntu.com / usn/USN-1200-1