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CVE-2000-1167

19
FAUCET Score

CVE-2000-1167 describes a vulnerability in the ppp utility within FreeBSD versions 4.1.1 and earlier, where the "nat deny_incoming" command fails to properly restrict access, allowing remote attackers to establish connections to the target system. This vulnerability carries a CVSS score of 7.5 (High), indicating a significant risk due to its network-based attack vector, low attack complexity, and potential for partial compromise of 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 CVE.

Impacted Technologies

VendorProductVersion(s)CPE
3.5CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:3.5:*:*:*:*:*:*:*
3.5.1CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:3.5.1:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:4.0:*:*:*:*:*:*:*
4.1CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:4.1:*:*:*:*:*:*:*
4.1.1CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:4.1.1:stable:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.63%
Probability of exploitation in next 30 days
EPSS Percentile
73.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0163 is in the 56th percentile among its peer group of 51,506 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, 0.1 Mastodon, and 0.4 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

ftp.freebsd.org / pub/FreeBSD/CERT/advisories/FreeBSD-SA-00:70.ppp-nat.asc
exchange.xforce.ibmcloud.com / vulnerabilities/5584
osvdb.org / 1655
securityfocus.com / bid/1974
PatchVendor Advisory