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CVE-2009-0159

25
FAUCET Score

CVE-2009-0159 describes a stack-based buffer overflow vulnerability in the ntpq utility within NTP versions prior to 4.2.4p7-RC2. This flaw allows remote NTP servers to execute arbitrary code on affected systems by sending a specially crafted response. With a CVSS score of 6.8, this vulnerability is moderately severe, requiring medium attack complexity but potentially leading to partial confidentiality, integrity, and availability compromise. 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
<= 4.2.4p7CPE matchmatch criteria
cpe:2.3:a:ntp:ntp:*:rc1:*:*:*:*:*:*
4.0.72CPE matchmatch criteria
cpe:2.3:a:ntp:ntp:4.0.72:*:*:*:*:*:*:*
4.0.73CPE matchmatch criteria
cpe:2.3:a:ntp:ntp:4.0.73:*:*:*:*:*:*:*
4.0.90CPE matchmatch criteria
cpe:2.3:a:ntp:ntp:4.0.90:*:*:*:*:*:*:*
4.0.91CPE matchmatch criteria
cpe:2.3:a:ntp:ntp:4.0.91:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
10.61%
Probability of exploitation in next 30 days
EPSS Percentile
95.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1061 is in the 95th percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: ntp-0:4.1.2-6.el3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: ntp-0:4.2.0.a.20040617-8.el4_7.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4.7 Z StreamFixed in: ntp-0:4.2.0.a.20040617-8.el4_7.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: ntp-0:4.2.2p1-9.el5_3.2
View patch

Vendor Advisories (1)

redhatCVE-2009-0159Low

ntp: buffer overflow in ntpq

Apr 9, 2009

References

ftp.netbsd.org / pub/NetBSD/security/advisories/NetBSD-SA2009-006.txt.asc
bugs.pardus.org.tr / show_bug.cgi
lists.apple.com / archives/security-announce/2009/May/msg00002.html
lists.opensuse.org / opensuse-security-announce/2009-06/msg00003.html
marc.info
ntp.bkbits.net / ntp-stable
osvdb.org / 53593
rhn.redhat.com / errata/RHSA-2009-1039.html
rhn.redhat.com / errata/RHSA-2009-1040.html
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/34608
Vendor Advisory
secunia.com / advisories/35074
Vendor Advisory
secunia.com / advisories/35137
Vendor Advisory
secunia.com / advisories/35138
Vendor Advisory
secunia.com / advisories/35166
Vendor Advisory
secunia.com / advisories/35169
Vendor Advisory
secunia.com / advisories/35253
Vendor Advisory
secunia.com / advisories/35308
Vendor Advisory
secunia.com / advisories/35336
Vendor Advisory
secunia.com / advisories/35416
Vendor Advisory
secunia.com / advisories/35630
Vendor Advisory
secunia.com / advisories/37471
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/49838
slackware.com / security/viewer.php
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19392
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5411
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8386
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8665
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9634
rhn.redhat.com / errata/RHSA-2009-1651.html
support.ntp.org / bugs/show_bug.cgi
Patch
support.apple.com / kb/HT3549
usn.ubuntu.com / 777-1
redhat.com / archives/fedora-package-announce/2009-May/msg01414.html
redhat.com / archives/fedora-package-announce/2009-May/msg01449.html
debian.org / security/2009/dsa-1801
gentoo.org / security/en/glsa/glsa-200905-08.xml
mandriva.com / security/advisories
securityfocus.com / archive/1/507985/100/0/threaded
securityfocus.com / bid/34481
Patch
securitytracker.com / id
us-cert.gov / cas/techalerts/TA09-133A.html
US Government Resource
vmware.com / security/advisories/VMSA-2009-0016.html
vupen.com / english/advisories/2009/0999
Vendor Advisory
vupen.com / english/advisories/2009/1297
Vendor Advisory
vupen.com / english/advisories/2009/3316
Vendor Advisory