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CVE-2017-6462

20
FAUCET Score

CVE-2017-6462 describes a buffer overflow vulnerability in the legacy Datum Programmable Time Server (DPTS) refclock driver affecting NTP versions prior to 4.2.8p10 and 4.3.94. This flaw allows a local attacker to achieve high impact on confidentiality, integrity, and availability by crafting a malicious /dev/datum device. Rated 7.8 HIGH on CVSSv3, the vulnerability has low attack complexity and requires local privileges. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
4.2.8CPE matchmatch criteria
cpe:2.3:a:ntp:ntp:4.2.8:p9:*:*:*:*:*:*
4.3.0CPE matchmatch criteria
cpe:2.3:a:ntp:ntp:4.3.0:*:*:*:*:*:*:*
4.3.1CPE matchmatch criteria
cpe:2.3:a:ntp:ntp:4.3.1:*:*:*:*:*:*:*
4.3.2CPE matchmatch criteria
cpe:2.3:a:ntp:ntp:4.3.2:*:*:*:*:*:*:*
4.3.3CPE matchmatch criteria
cpe:2.3:a:ntp:ntp:4.3.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.49%
Probability of exploitation in next 30 days
EPSS Percentile
39.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0049 is in the 79th percentile among its peer group of 17,070 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: ntp-0:4.2.6p5-12.el6_9.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: ntp-0:4.2.6p5-28.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: ntp

Vendor Advisories (1)

redhatCVE-2017-6462Low

ntp: Buffer Overflow in DPTS Clock

Mar 21, 2017

References

access.redhat.com / errata/RHSA-2017:3071
access.redhat.com / errata/RHSA-2018:0855
security.freebsd.org / advisories/FreeBSD-SA-17:03.ntp.asc
support.apple.com / HT208144
support.hpe.com / hpsc/doc/public/display
support.ntp.org / bin/view/Main/NtpBug3388
PatchVendor Advisory
support.ntp.org / bin/view/Main/SecurityNotice
Vendor Advisory
usn.ubuntu.com / 3707-2
securityfocus.com / bid/97045
Third Party AdvisoryVDB Entry
securitytracker.com / id/1038123
Third Party AdvisoryVDB Entry