CVE-2016-0727

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-17. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.3%CVSS: 7.8Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

The crontab script in the ntp package before 1:4.2.6.p3+dfsg-1ubuntu3.11 on Ubuntu 12.04 LTS, before 1:4.2.6.p5+dfsg-3ubuntu2.14.04.10 on Ubuntu 14.04 LTS, on Ubuntu Wily, and before 1:4.2.8p4+dfsg-3ubuntu5.3 on Ubuntu 16.04 LTS allows local users with access to the ntp account to write to arbitrary files and consequently gain privileges via vectors involving statistics directory cleanup.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
56
EG Risk 56/100CISA SSVC

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
Severity78% × 45%
Exploitation40% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
1.3%
EPSS %ILE
68th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (EG-KEV: elevated) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

April 14, 2017

Last Modified

June 17, 2026

Advisory Details (4)

Auto-updated Sep 23, 2026
Patch available. Sources: redhat.
generic

CVE-2016-0727 - PSIRT.COM

http://www.securityfocus.com/bid/81552
generic

Packet Storm Security

http://packetstormsecurity.com/files/141913/NTP-Privilege-Escalation.html
redhat

1382369 – (CVE-2016-0727) CVE-2016-0727 ntp: Privilege escalation via cronjob

Affected: Red Hat Enterprise Linux 5, 6, or 7.

https://bugzilla.redhat.com/show_bug.cgi?id=1382369
generic

Bug #1528050 “NTP statsdir cleanup cronjob insecure” : Bugs : ntp package : Ubuntu

https://bugs.launchpad.net/ubuntu/+source/ntp/+bug/1528050

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuntpdate (1:4.2.8p4+dfsg-3ubuntu5.3) @ xenial2026-05-22ubuntu

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

(1 across 1 ecosystem)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
ntp—
  • every version up to 1:4.2.8p9+dfsg-2: fixed in 1:4.2.8p9+dfsg-2
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

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 7× in last 7d / 25× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 163 total refreshes for this CVE.

  1. 2026-10-09 20:01 UTCEPSS rescore
  2. 2026-10-08 16:35 UTCEPSS rescore
  3. 2026-10-08 06:24 UTCOSV refresh
  4. 2026-10-07 23:40 UTCEPSS rescore
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  9. 2026-09-30 14:58 UTCEPSS rescore
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  11. 2026-09-30 09:09 UTCEG score recompute
  12. 2026-09-28 13:45 UTCEPSS rescore
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  14. 2026-09-26 15:53 UTCEPSS rescore
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  20. 2026-09-18 12:20 UTCOSV refresh
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  1. 2026-09-10 09:26 UTCEPSS rescore
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  3. 2026-09-06 13:42 UTCEPSS rescore
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  5. 2026-09-02 14:07 UTCEPSS rescore
  6. 2026-09-01 13:48 UTCEPSS rescore
  7. 2026-09-01 03:31 UTCEPSS rescore
  8. 2026-08-30 12:51 UTCOSV refresh
  9. 2026-08-27 14:20 UTCEPSS rescore
  10. 2026-08-26 14:41 UTCEPSS rescore
  11. 2026-08-25 13:44 UTCEPSS rescore
  12. 2026-08-23 00:13 UTCEPSS rescore
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  20. 2026-08-14 02:49 UTCOSV refresh
  21. 2026-08-12 13:46 UTCEPSS rescore
  22. 2026-08-11 13:36 UTCEPSS rescore
  23. 2026-08-09 13:42 UTCEPSS rescore
  24. 2026-08-08 16:32 UTCEPSS rescore
  25. 2026-08-07 16:22 UTCEPSS rescore
  26. 2026-08-06 13:42 UTCEPSS rescore
  27. 2026-08-05 19:12 UTCEPSS rescore
  28. 2026-08-04 15:04 UTCEPSS rescore
  29. 2026-08-04 10:31 UTCEPSS rescore
  30. 2026-08-01 04:11 UTCEPSS rescore
  31. 2026-07-30 01:26 UTCEPSS rescore
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  33. 2026-07-29 07:34 UTCOSV refresh
  34. 2026-07-28 15:31 UTCEPSS rescore
  35. 2026-07-26 14:50 UTCEPSS rescore
  36. 2026-07-25 14:13 UTCEPSS rescore
  37. 2026-07-24 14:13 UTCEPSS rescore
  38. 2026-07-23 14:14 UTCEPSS rescore
  39. 2026-07-23 01:20 UTCEG score recompute
  40. 2026-07-23 00:22 UTCEG score recompute
  41. 2026-07-22 22:00 UTCEG score recompute
  42. 2026-07-22 14:04 UTCEPSS rescore
  43. 2026-07-21 15:21 UTCEPSS rescore
  44. 2026-07-21 15:21 UTCEPSS rescore
  45. 2026-07-20 17:03 UTCEPSS rescore
  46. 2026-07-19 02:26 UTCEPSS rescore
  47. 2026-07-19 02:26 UTCEPSS rescore
  48. 2026-07-18 10:00 UTCEPSS rescore
  49. 2026-07-16 16:59 UTCEPSS rescore
  50. 2026-07-15 16:54 UTCEPSS rescore
  51. 2026-07-15 16:54 UTCEPSS rescore
  52. 2026-07-15 01:56 UTCEPSS rescore
  53. 2026-07-13 22:26 UTCEPSS rescore
  54. 2026-07-13 22:26 UTCEPSS rescore
  55. 2026-07-12 05:42 UTCEPSS rescore
  56. 2026-07-12 00:22 UTCOSV refresh
  57. 2026-07-11 08:23 UTCEPSS rescore
  58. 2026-07-09 19:05 UTCEPSS rescore
  59. 2026-07-09 19:05 UTCEPSS rescore
  60. 2026-07-08 15:10 UTCEPSS rescore
  61. 2026-07-07 13:42 UTCEPSS rescore
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  63. 2026-07-06 16:24 UTCEPSS rescore
  64. 2026-07-06 02:20 UTCEPSS rescore
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  66. 2026-07-04 06:28 UTCEPSS rescore
  67. 2026-07-01 15:02 UTCEPSS rescore
  68. 2026-06-30 23:19 UTCEPSS rescore
  69. 2026-06-30 23:19 UTCEPSS rescore
  70. 2026-06-29 14:03 UTCEPSS rescore
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  75. 2026-06-25 13:47 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-41764
    First seen Jan 21, 2016

    NTP - Local Privilege Escalation

    Open source ↗

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2016-0727?
CVE-2016-0727 is a high vulnerability published on April 14, 2017. The crontab script in the ntp package before 1:4.2.6.p3+dfsg-1ubuntu3.11 on Ubuntu 12.04 LTS, before 1:4.2.6.p5+dfsg-3ubuntu2.14.04.10 on Ubuntu 14.04 LTS, on Ubuntu Wily, and before 1:4.2.8p4+dfsg-3ubuntu5.3 on Ubuntu 16.04 LTS allows local users with access to the ntp account to write to…
When was CVE-2016-0727 disclosed?
CVE-2016-0727 was first published on April 14, 2017, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-0727 actively exploited?
CVE-2016-0727 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.3% probability of exploitation in the next 30 days (68th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2016-0727?
CVE-2016-0727 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2016-0727?
A fix for CVE-2016-0727 is available: update to the fixed version the vendor names in its advisory.

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