CVE-2000-1167

ppp utility in FreeBSD 4.1.1 and earlier does not properly restrict access as specified by the "nat deny_incoming" command, which allows remote attackers to connect to the target system.

Published: 2001-01-09 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2000-1167 is rated Moderate Risk (56.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.63%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2000-1167

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.74% 1.63% +0.89%
2 2025-03-30 0.77% 0.74% -0.03%
3 2025-03-29 — 0.77% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2000-1167

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2000-1167

Affected software / configurations for CVE-2000-1167

Vendor Product Version Raw CPE
freebsd freebsd 3.5 cpe:2.3:o:freebsd:freebsd:3.5:*:*:*:*:*:*:*
freebsd freebsd 3.5.1 cpe:2.3:o:freebsd:freebsd:3.5.1:*:*:*:*:*:*:*
freebsd freebsd 4.0 cpe:2.3:o:freebsd:freebsd:4.0:*:*:*:*:*:*:*
freebsd freebsd 4.1 cpe:2.3:o:freebsd:freebsd:4.1:*:*:*:*:*:*:*
freebsd freebsd 4.1.1 cpe:2.3:o:freebsd:freebsd:4.1.1:stable:*:*:*:*:*:*

References for CVE-2000-1167

cvelogic Threat Intelligence