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CVE-2006-4172

18
FAUCET Score

CVE-2006-4172 is an integer overflow vulnerability in the i386_set_ldt call within FreeBSD 5.5 and potentially earlier versions down to 5.2. This flaw allows a local attacker to trigger a denial of service (system crash) and possibly execute arbitrary code. With a CVSS score of 7.2, it is considered highly severe, requiring local access with low attack complexity, and posing a complete threat to confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.5CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
5.2CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:5.2:*:*:*:*:*:*:*
5.2.1CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:5.2.1:*:*:*:*:*:*:*
5.3CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:5.3:*:*:*:*:*:*:*
5.4CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:5.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.2HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.41%
Probability of exploitation in next 30 days
EPSS Percentile
33.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0041 is in the 46th percentile among its peer group of 3,241 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.5 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

Remediation records are not available for this CVE.

References

archives.neohapsis.com / archives/bugtraq/2006-09/0376.html
secunia.com / advisories/22064
securitytracker.com / id
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/29132
idefense.com / intelligence/vulnerabilities/display.php
securityfocus.com / archive/1/446945/100/0/threaded
securityfocus.com / bid/20158