CVE-2014-5209Public exploitNetwork attack vector

ACL disclosure via unrestricted GET_RESTRICT requests

Published Jan 8, 2020 · Updated Aug 6, 2024

Information disclosure in NTP 4.2.7p25 allows remote attackers to read the server restriction list through a mode 7 GET_RESTRICT request. The mode 7 GET_RESTRICT handler returns configured host and network restriction entries to unauthenticated query clients instead of withholding the ACL. Exposure requires querying to be allowed and mode 7 enabled; returned entries can reveal internal addresses and more permissive trust relationships.

CVSS severity5.3
Medium
EPSS probability2.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in NTP 4.2.7p25 allows remote attackers to read the server restriction list through a mode 7 GET_RESTRICT request. The mode 7 GET_RESTRICT handler returns configured host and network restriction entries to unauthenticated query clients instead of withholding the ACL. Exposure requires querying to be allowed and mode 7 enabled; returned entries can reveal internal addresses and more permissive trust relationships.

The record

CVE
CVE-2014-5209
Published
Jan 8, 2020
Updated
Aug 6, 2024
Vendor
Network Time Foundation
Product
NTP
Classifications
CWE-200, T1590.005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 8, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.2.7p25

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Network Time Foundation · NTPversion=4.2.7p25

Published CVSS scores

5.0NISTAV:N/AC:L/Au:N/C:P/I:N/A:N
5.3NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1590.005Gather Victim Network Information: IP Addresses

Public exploit references

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Technologies

Your stack

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Your stack

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