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CVE-2012-4049

15
FAUCET Score

CVE-2012-4049 describes a denial-of-service vulnerability in the NFS dissector of Wireshark versions 1.4.x, 1.6.x, and 1.8.x. A remote attacker can exploit this by sending a specially crafted packet, causing Wireshark to enter an infinite loop and consume excessive CPU resources. With a CVSS score of 2.9, this vulnerability is considered low severity, requiring adjacent network access and medium attack complexity to achieve a partial denial of service. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.4.0CPE matchmatch criteria
cpe:2.3:a:wireshark:wireshark:1.4.0:*:*:*:*:*:*:*
1.4.0CPE matchmatch criteria
cpe:2.3:a:wireshark:wireshark:1.4.0:*:*:*:*:*:itanium:*
1.4.0CPE matchmatch criteria
cpe:2.3:a:wireshark:wireshark:1.4.0:*:*:*:*:*:sparc:*
1.4.1CPE matchmatch criteria
cpe:2.3:a:wireshark:wireshark:1.4.1:*:*:*:*:*:*:*
1.4.1CPE matchmatch criteria
cpe:2.3:a:wireshark:wireshark:1.4.1:*:*:*:*:*:itanium:*

CVSS Data

CVSS version used by this source: 2.0

2.9LOW

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
ADJACENT_NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
5.5
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.65%
Probability of exploitation in next 30 days
EPSS Percentile
74.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0165 is in the 96th percentile among its peer group of 122 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (2)

redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: wireshark
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: wireshark

Vendor Advisories (1)

redhatCVE-2012-4049Low

wireshark: Excessive CPU usage in NFS dissector

Jul 22, 2012

References

anonsvn.wireshark.org / viewvc/trunk/epan/dissectors/packet-nfs.c
ExploitPatch
anonsvn.wireshark.org / viewvc
lists.opensuse.org / opensuse-updates/2012-08/msg00000.html
bugs.wireshark.org / bugzilla/show_bug.cgi
secunia.com / advisories/49971
secunia.com / advisories/54425
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15707
gentoo.org / security/en/glsa/glsa-201308-05.xml
wireshark.org / security/wnpa-sec-2012-12.html
Vendor Advisory