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CVE-2012-5240

19
FAUCET Score

CVE-2012-5240 describes a buffer overflow vulnerability in the LDP dissector of Wireshark versions 1.8.x prior to 1.8.3. This flaw, located in the dissect_tlv function, can be triggered by remote attackers sending a specially crafted malformed packet. The vulnerability carries a CVSS score of 5.8, indicating a medium severity risk, and could lead to a denial of service (application crash) or potentially other unspecified impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.8.0CPE matchmatch criteria
cpe:2.3:a:wireshark:wireshark:1.8.0:*:*:*:*:*:*:*
1.8.1CPE matchmatch criteria
cpe:2.3:a:wireshark:wireshark:1.8.1:*:*:*:*:*:*:*
1.8.2CPE matchmatch criteria
cpe:2.3:a:wireshark:wireshark:1.8.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.8MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
ADJACENT_NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
6.5
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.39%
Probability of exploitation in next 30 days
EPSS Percentile
69.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0139 is in the 93rd percentile among its peer group of 1,802 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 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 Advisories (1)

redhatCVE-2012-5240Moderate

wireshark: Stack-based buffer overflow in the LDP dissector

Oct 2, 2012

References

anonsvn.wireshark.org / viewvc/trunk/epan/dissectors/packet-ldp.c
anonsvn.wireshark.org / viewvc
bugs.wireshark.org / bugzilla/show_bug.cgi
bugs.wireshark.org / bugzilla/show_bug.cgi
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15691
securityfocus.com / bid/55754
securitytracker.com / id
wireshark.org / security/wnpa-sec-2012-29.html
Vendor Advisory