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CVE-2001-1166

15
FAUCET Score

CVE-2001-1166 describes a vulnerability in linprocfs on FreeBSD 4.3 and earlier, where improper access restrictions allow a process with debugging rights on a privileged process to read restricted kernel memory. This medium-severity vulnerability has a CVSS score of 5.0, indicating a network-based attack with low complexity, resulting in potential information disclosure (C:P). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this older CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.0CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:4.0:*:*:*:*:*:*:*
4.1CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:4.1:*:*:*:*:*:*:*
4.2CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:4.2:*:*:*:*:*:*:*
4.3CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:4.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

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

Exploit Intelligence

EPSS Score
1.39%
Probability of exploitation in next 30 days
EPSS Percentile
69.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0139 is in the 51st percentile among its peer group of 23,723 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 0.4 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

ftp.freebsd.org / pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:55.procfs.asc
iss.net / security_center/static/7017.php
PatchVendor Advisory
osvdb.org / 1938
securityfocus.com / bid/3217
PatchVendor Advisory