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CVE-2017-6458

32
FAUCET Score

CVE-2017-6458 describes multiple buffer overflow vulnerabilities within the ctl_put* functions of NTP versions prior to 4.2.8p10 and 4.3.x before 4.3.94, affecting products from Apple, HPE, NTP, and Siemens. This vulnerability carries a high CVSS score of 8.8, indicating a critical risk due to its network-based attack vector, low attack complexity, and potential for high impact on confidentiality, integrity, and availability. Despite its severity, 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
< 4.2.8CPE matchmatch criteria
cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*
>= 4.3.0, < 4.3.94CPE matchmatch criteria
cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*
4.2.8CPE matchmatch criteria
cpe:2.3:a:ntp:ntp:4.2.8:-:*:*:*:*:*:*
4.2.8CPE matchmatch criteria
cpe:2.3:a:ntp:ntp:4.2.8:p1:*:*:*:*:*:*
4.2.8CPE matchmatch criteria
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
6.51%
Probability of exploitation in next 30 days
EPSS Percentile
93.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0651 is in the 92nd percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2017-6458Low

ntp: Potential Overflows in ctl_put() functions

Mar 21, 2017

References

packetstormsecurity.com / files/142284/Slackware-Security-Advisory-ntp-Updates.html
bto.bluecoat.com / security-advisory/sa147
cert-portal.siemens.com / productcert/pdf/ssa-211752.pdf
Third Party Advisory
seclists.org / fulldisclosure/2017/Nov/7
seclists.org / fulldisclosure/2017/Sep/62
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/4B7BMVXV53EE7XYW2KAVETDHTP452O3Z
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/7KVLFA3J43QFIP4I7HE7KQ5FXSMJEKC6
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/ZUPPICJXWL3AWQB7I3AWUC74YON7UING
support.apple.com / HT208144
Third Party Advisory
support.apple.com / kb/HT208144
support.f5.com / csp/article/K99254031
support.hpe.com / hpsc/doc/public/display
Third Party Advisory
support.ntp.org / bin/view/Main/NtpBug3379
PatchVendor Advisory
support.ntp.org / bin/view/Main/SecurityNotice
Vendor Advisory
us-cert.cisa.gov / ics/advisories/icsa-21-159-11
broadcom.com / support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-294
securityfocus.com / archive/1/archive/1/540464/100/0/threaded
securityfocus.com / bid/97051
Third Party AdvisoryVDB Entry
securitytracker.com / id/1038123
Third Party AdvisoryVDB Entry
ubuntu.com / usn/USN-3349-1