CVE-2000-0391

Buffer overflow in krshd in Kerberos 5 allows remote attackers to gain root privileges.

Published: 2000-05-16 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2000-0391 is rated High Risk (68.8/100): CVSS Critical severity, with high exploitation likelihood (EPSS 8.48%, 92th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize 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-2000-0391

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 2025-03-30 11.69% 8.48% -3.20%
2 2025-03-29 8.48% 11.69% +3.20%
3 2025-03-17 — 8.48% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2000-0391

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C 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:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2000-0391

OS Trackers for CVE-2000-0391

vendor priority summary link
redhat — — https://access.redhat.com/security/cve/CVE-2000-0391

Affected software / configurations for CVE-2000-0391

Vendor Product Version Raw CPE
cygnus cygnus_network_security 4.0 cpe:2.3:a:cygnus:cygnus_network_security:4.0:*:*:*:*:*:*:*
cygnus kerbnet 5.0 cpe:2.3:a:cygnus:kerbnet:5.0:*:*:*:*:*:*:*
mit kerberos 4.0 cpe:2.3:a:mit:kerberos:4.0:*:*:*:*:*:*:*
mit kerberos_5 1.0 cpe:2.3:a:mit:kerberos_5:1.0:*:*:*:*:*:*:*
mit kerberos_5 1.1.1 cpe:2.3:a:mit:kerberos_5:1.1.1:*:*:*:*:*:*:*
redhat linux 6.2 cpe:2.3:o:redhat:linux:6.2:*:alpha:*:*:*:*:*
redhat linux 6.2 cpe:2.3:o:redhat:linux:6.2:*:i386:*:*:*:*:*
redhat linux 6.2 cpe:2.3:o:redhat:linux:6.2:*:sparc:*:*:*:*:*

References for CVE-2000-0391

cvelogic Threat Intelligence