Stack-based buffer overflow in the cookedprint function in ntpq/ntpq.c in ntpq in NTP before 4.2.4p7-RC2 allows remote NTP servers to execute arbitrary code via a crafted response.
CVE-2009-0159
“—” beside the score: it is equal to NVD's CVSS v2 base score.
This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 6.8 — NVD rates that MEDIUM (NVD's v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; no CRITICAL band). Vector AV:N/AC:M/Au:N/C:P/I:P/A:P. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 13% exploitation probability in the next 30 days; it does not lift the v2 base. EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated) sets EG Risk's exploitation input, not EPSS. Confidence: LOW.
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v2.0 (legacy)
- 6.8MEDIUMNVD never assigned a CVSS v3 rating to this CVE
- EG Score
- 6.8MEDIUMlow confidence
- EG Risk
- 47EG Risk 47/100
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computed (value × EchelonGraph’s weight)Severity68% × 45%The EG Score, 6.8 of 10.Exploitation40% × 40%EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.Automatability0% × 15%CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 13%
- EPSS %ILE
- 96th
- KEV
- Not listed
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines.
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
April 14, 2009
Last Modified
April 23, 2026
References (46)
- MITRE · CVE Programftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2009-006.txt.asc
- MITRE · CVE Programhttp://bugs.pardus.org.tr/show_bug.cgi?id=9532
- MITRE · CVE Programhttp://lists.apple.com/archives/security-announce/2009/May/msg00002.html
- MITRE · CVE Programhttp://lists.opensuse.org/opensuse-security-announce/2009-06/msg00003.html
- MITRE · CVE Programhttp://marc.info/?l=bugtraq&m=136482797910018&w=2
- MITRE · CVE Programhttp://ntp.bkbits.net:8080/ntp-stable/?PAGE=gnupatch&REV=1.1565
- MITRE · CVE Programhttp://osvdb.org/53593 (archived copy: the site no longer serves it)
- MITRE · CVE Programhttp://rhn.redhat.com/errata/RHSA-2009-1039.html
- MITRE · CVE Programhttp://rhn.redhat.com/errata/RHSA-2009-1040.html
- MITRE · CVE Programhttp://secunia.com/advisories/34608 (archived copy: the site no longer serves it)Third-party advisory (tagged Vendor Advisory by NVD)
- MITRE · CVE Programhttp://secunia.com/advisories/35074 (archived copy: the site no longer serves it)Third-party advisory (tagged Vendor Advisory by NVD)
- MITRE · CVE Programhttp://secunia.com/advisories/35137 (archived copy: the site no longer serves it)Third-party advisory (tagged Vendor Advisory by NVD)
- MITRE · CVE Programhttp://secunia.com/advisories/35138 (archived copy: the site no longer serves it)Third-party advisory (tagged Vendor Advisory by NVD)
- MITRE · CVE Programhttp://secunia.com/advisories/35166 (archived copy: the site no longer serves it)Third-party advisory (tagged Vendor Advisory by NVD)
- MITRE · CVE Programhttp://secunia.com/advisories/35169 (archived copy: the site no longer serves it)Third-party advisory (tagged Vendor Advisory by NVD)
15 of 46 shown · show the other 31
- MITRE · CVE Programhttp://secunia.com/advisories/35253 (archived copy: the site no longer serves it)Third-party advisory (tagged Vendor Advisory by NVD)
- MITRE · CVE Programhttp://secunia.com/advisories/35308 (archived copy: the site no longer serves it)Third-party advisory (tagged Vendor Advisory by NVD)
- MITRE · CVE Programhttp://secunia.com/advisories/35336 (archived copy: the site no longer serves it)Third-party advisory (tagged Vendor Advisory by NVD)
- MITRE · CVE Programhttp://secunia.com/advisories/35416 (archived copy: the site no longer serves it)Third-party advisory (tagged Vendor Advisory by NVD)
- MITRE · CVE Programhttp://secunia.com/advisories/35630 (archived copy: the site no longer serves it)Third-party advisory (tagged Vendor Advisory by NVD)
- MITRE · CVE Programhttp://secunia.com/advisories/37471 (archived copy: the site no longer serves it)Third-party advisory (tagged Vendor Advisory by NVD)
- MITRE · CVE Programhttp://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.566238
- MITRE · CVE Programhttp://support.apple.com/kb/HT3549
- MITRE · CVE Programhttp://www.debian.org/security/2009/dsa-1801
- MITRE · CVE Programhttp://www.gentoo.org/security/en/glsa/glsa-200905-08.xml
- MITRE · CVE Programhttp://www.mandriva.com/security/advisories?name=MDVSA-2009:092
- MITRE · CVE Programhttp://www.securityfocus.com/archive/1/507985/100/0/threaded (archived copy: the site no longer serves it)
- MITRE · CVE Programhttp://www.securityfocus.com/bid/34481 (archived copy: the site no longer serves it)Patch
- MITRE · CVE Programhttp://www.securitytracker.com/id?1022033
- MITRE · CVE Programhttp://www.us-cert.gov/cas/techalerts/TA09-133A.htmlUS Government Resource
- MITRE · CVE Programhttp://www.vmware.com/security/advisories/VMSA-2009-0016.html
- MITRE · CVE Programhttp://www.vupen.com/english/advisories/2009/0999Third-party advisory (tagged Vendor Advisory by NVD)
- MITRE · CVE Programhttp://www.vupen.com/english/advisories/2009/1297Third-party advisory (tagged Vendor Advisory by NVD)
- MITRE · CVE Programhttp://www.vupen.com/english/advisories/2009/3316Third-party advisory (tagged Vendor Advisory by NVD)
- MITRE · CVE Programhttps://bugzilla.redhat.com/show_bug.cgi?id=490617
- MITRE · CVE Programhttps://exchange.xforce.ibmcloud.com/vulnerabilities/49838
- MITRE · CVE Programhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19392
- MITRE · CVE Programhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5411
- MITRE · CVE Programhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8386
- MITRE · CVE Programhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8665
- MITRE · CVE Programhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9634
- MITRE · CVE Programhttps://rhn.redhat.com/errata/RHSA-2009-1651.html
- MITRE · CVE Programhttps://support.ntp.org/bugs/show_bug.cgi?id=1144Patch
- MITRE · CVE Programhttps://usn.ubuntu.com/777-1/
- MITRE · CVE Programhttps://www.redhat.com/archives/fedora-package-announce/2009-May/msg01414.html
- MITRE · CVE Programhttps://www.redhat.com/archives/fedora-package-announce/2009-May/msg01449.html
Patch Availability(4)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| ubuntu | ntp (1:4.2.4p4+dfsg-7ubuntu5.1) @ jaunty | 2026-05-30 | ubuntu |
| redhat | ntp-0:4.1.2-6.el3 | 2009-12-08 | redhat |
| redhat | ntp-0:4.2.0.a.20040617-8.el4_7.2 | 2009-05-18 | redhat |
| redhat | ntp-0:4.2.2p1-9.el5_3.2 | 2009-05-18 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(3 across 3 ecosystems)
Debian:11(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| ntp | — |
| — |
Debian:4.0(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| ntp | 1:4.2.2.p4+dfsg-2, 1:4.2.2.p4+dfsg-2etch1, 1:4.2.2.p4+dfsg-2etch2 |
| — |
Debian:5.0(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| ntp | 1:4.2.4p4+dfsg-8 |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(4)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Data Freshness Timeline
(refreshed 8× in last 7d / 18× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 81 of 112 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 19 repeat rows among the latest 100 are merged into the row they repeat. The 31 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-10-12 01:55 UTCEG score recompute
- 2026-10-11 13:38 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-10-10 19:54 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-10-09 20:00 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-10-08 16:33 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-10-07 23:37 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-10-06 15:09 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-10-05 17:37 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-10-03 15:49 UTCOSV refresh
- 2026-09-30 14:58 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-09-29 07:56 UTCEG score recompute
- 2026-09-27 13:39 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-09-26 15:52 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-09-24 13:57 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-09-17 19:20 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-09-15 03:04 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-09-14 06:50 UTCOSV refresh
- 2026-09-12 14:54 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-09-10 09:24 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-09-06 13:41 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-09-05 15:22 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-09-04 13:55 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-08-28 21:34 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-08-27 14:19 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-08-26 08:13 UTCOSV refresh
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- 2026-08-25 13:43 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-08-19 16:58 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-08-15 01:24 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-08-09 23:10 UTCOSV refresh
- 2026-08-08 16:31 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-08-06 13:41 UTCEPSS rescoreEPSS 13% · 96th percentile
- 2026-07-30 16:22 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-07-30 01:26 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-07-26 13:37 UTCEG score recomputeFirst assessed: 6.8 MEDIUM
- 2026-07-25 14:12 UTCEPSS rescoreEPSS 11% · 95th percentile
- 2026-07-24 23:41 UTCOSV refresh
- 2026-07-24 14:12 UTCEPSS rescoreEPSS 11% · 95th percentile
- 2026-07-23 14:14 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-07-23 00:58 UTCEG score recompute
- 2026-07-23 00:36 UTCEG score recompute
- 2026-07-23 00:03 UTCEG score recompute
- 2026-07-22 21:42 UTCEG score recompute
- 2026-07-22 14:03 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-07-21 15:20 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-07-20 17:03 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-07-18 09:59 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-07-16 16:58 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-07-15 16:54 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-07-13 22:25 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-07-11 08:22 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-07-09 19:04 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-07-08 15:10 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-07-07 19:11 UTCOSV refresh
- 2026-07-06 16:23 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-07-06 02:19 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-07-05 02:26 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-07-04 06:27 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-07-01 15:02 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-06-30 23:19 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-06-29 14:02 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-06-28 14:03 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-06-28 04:52 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-06-27 03:05 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-06-25 13:46 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-06-24 14:02 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-06-23 21:29 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-06-21 14:53 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-06-21 01:56 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-06-19 19:22 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-06-19 06:25 UTCOSV refresh
- 2026-06-18 17:49 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-06-17 17:49 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-06-16 17:49 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-06-15 17:44 UTCEPSS rescoreEPSS 13% · 95th percentile
- 2026-06-14 23:14 UTCEPSS rescoreEPSS 20% · 95th percentile
- 2026-06-13 22:57 UTCEPSS rescoreEPSS 20% · 95th percentile
- 2026-06-12 23:08 UTCEPSS rescoreEPSS 20% · 95th percentile
- 2026-06-10 22:14 UTCEPSS rescoreEPSS 20% · 95th percentile
- 2026-06-10 13:17 UTCEPSS rescoreEPSS 20% · 95th percentile
- 2026-06-07 15:22 UTCEPSS rescoreEPSS 20% · 95th percentile
- 2026-06-06 13:44 UTCEPSS rescoreEPSS 20% · 95th percentile
Related CVEs(same product + same vendor + same CWE)
Same product
10 shownDebian:5.0:ntp · Debian:4.0:ntp · Debian:11:ntp
- CVE-2009-1252EG 6.8EPSS p98MEDIUM
- CVE-2009-3563EG 6.4EPSS p98MEDIUM
- CVE-2009-0021EG 5.0MEDIUM
- CVE-2018-12327EG 9.8EPSS p98CRITICAL
- CVE-2018-7183EG 9.8EPSS p96CRITICAL
- CVE-2015-7871EG 9.8EPSS p100CRITICAL
- CVE-2015-7853EG 9.8EPSS p96CRITICAL
- CVE-2015-7705EG 9.8EPSS p96CRITICAL
- CVE-2015-7854EG 8.8EPSS p97HIGH
- CVE-2015-7849EG 8.8EPSS p97HIGH
Same vendor
2 shownredhat:RHSA-2009:1039 · redhat:RHSA-2009:1651
Same CWE
10 shownCWE-119
- CVE-2009-0235EG 9.3EPSS p98HIGH
- CVE-2009-0196EG 9.3EPSS p94HIGH
- CVE-2008-6703EG 10.0EPSS p95HIGH
- CVE-2009-0844EG 5.8EPSS p91MEDIUM
- CVE-2008-6679EG 5.0EPSS p91MEDIUM
- CVE-2009-0910EG 6.8MEDIUM
- CVE-2009-0909EG 9.3EPSS p91HIGH
- CVE-2009-0146EG 4.3MEDIUM
- CVE-2009-0195EG 6.8EPSS p92MEDIUM
- CVE-2009-0799EG 4.3EPSS p90MEDIUM
Frequently asked(4)
What is CVE-2009-0159?
When was CVE-2009-0159 made public?
Is CVE-2009-0159 actively exploited?
How do I remediate CVE-2009-0159?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2009-0159
Is Your Infrastructure Affected by CVE-2009-0159?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.