CVE-2001-0414

Buffer overflow in ntpd ntp daemon 4.0.99k and earlier (aka xntpd and xntp3) allows remote...

10.0 HighPublic exploit

Buffer overflow in ntpd ntp daemon 4.0.99k and earlier (aka xntpd and xntp3) allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long readvar argument.

Exploit likelihood

91.9%Up 20.6 points since Feb 4, 2022

What each source reports

NVD Score used 10.0

Buffer overflow in ntpd ntp daemon 4.0.99k and earlier (aka xntpd and xntp3) allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long readvar argument.

Record: CVE-2001-0414
CVSS 2.0: 10.0 HighAV:N/AC:L/Au:N/C:C/I:C/A:C
Updated: 2026-11-02

CVE List No score

Buffer overflow in ntpd ntp daemon 4.0.99k and earlier (aka xntpd and xntp3) allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long readvar argument.

Record: CVE-2001-0414
Updated: 2026-11-02

EUVDEUVD-2001-0411 No score

Buffer overflow in ntpd ntp daemon 4.0.99k and earlier (aka xntpd and xntp3) allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long readvar argument.

Record: EUVD-2001-0411
Updated: 2026-11-03

GitHub AdvisoriesGHSA-xj76-gxv6-j253 No score

Buffer overflow in ntpd ntp daemon 4.0.99k and earlier (aka xntpd and xntp3) allows remote...

Buffer overflow in ntpd ntp daemon 4.0.99k and earlier (aka xntpd and xntp3) allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long readvar argument.

Record: GHSA-xj76-gxv6-j253
Updated: 2026-11-02

Affected products

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	NTP daemon readvar - Remote Buffer Overflow (Metasploit)	2010-08-25
Exploit-DB	NTPd - Remote Buffer Overflow	2001-04-04
Exploit-DB	NTPd 4.0.99j-k readvar - Remote Buffer Overflow (Metasploit)	2001-04-04
Metasploit	NTP Daemon readvar Buffer Overflow	2001-04-04

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, Metasploit, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2001-0414 is a high vulnerability (CVSS 10.0) in Dave Mills Ntpd, published June 18, 2001. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 91.9%, the 99th percentile. No source names a fixed version.

References

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