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CVE-2011-4100

17
FAUCET Score

CVE-2011-4100 describes a denial-of-service vulnerability in Wireshark versions 1.6.x before 1.6.3. Specifically, the csnStreamDissector function in the CSN.1 dissector fails to initialize a variable, allowing a remote attacker to crash the application via a malformed packet. This vulnerability has a CVSS score of 4.3 (Medium severity), indicating a network-based attack with medium complexity and a partial availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.6.0CPE matchmatch criteria
cpe:2.3:a:wireshark:wireshark:1.6.0:*:*:*:*:*:*:*
1.6.1CPE matchmatch criteria
cpe:2.3:a:wireshark:wireshark:1.6.1:*:*:*:*:*:*:*
1.6.2CPE matchmatch criteria
cpe:2.3:a:wireshark:wireshark:1.6.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.28%
Probability of exploitation in next 30 days
EPSS Percentile
81.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0228 is in the 70th percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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

Patch Available

Vendor Patches (1)

redhatpatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2011-4100Low

wireshark: uninitialized variable in the CSN.1 dissector can cause a crash

Sep 16, 2011

References

anonsvn.wireshark.org / viewvc
Patch
openwall.com / lists/oss-security/2011/11/01/9
Patch
osvdb.org / 76768
bugs.wireshark.org / bugzilla/show_bug.cgi
Patch
bugzilla.redhat.com / show_bug.cgi
Patch
secunia.com / advisories/46644
exchange.xforce.ibmcloud.com / vulnerabilities/71090
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14833
securityfocus.com / bid/50479
wireshark.org / security/wnpa-sec-2011-17.html