Skip to content
Fencer Vulns
critical 10.0

CVE-2001-0414 in the critical feed json

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 possi…

published 2001-06-18 25 y ago modified 2026-06-16 4 mo ago also EUVD-2001-0411

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
91.9%
EPSS 91.9% chance of exploitation in 30 days, percentile 99.8%
public exploits
4
Metasploit, Exploit-DB

Summary

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.

Patch / fix

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2001-0414 updated

ntpd security hole

  • Red Hat Linux 5.2 Red Hat Linux 6.2 Red Hat Linux 7.0
    fixed: vendor fix RHSA-2001:045

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (Metasploit exploit/multi/ntp/ntp_overflow)
  2. Published

Exploit prediction

91.94% chance of exploitation in the next 30 days, higher than 99.8% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

CVSS scores

assigned by version score vector
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.