How severe is CVE-2017-6452?

CVE-2017-6452 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-6452 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-6452?

CVE-2017-6452 primarily affects Ntp. In total, 95 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-6452?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-6452 published?

CVE-2017-6452 was published on 2017-03-27 and last updated on 2026-06-17.

CVE-2017-6452

CVE-2017-6452 is a high-severity vulnerability in Ntp with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Ntp
Published: 2017-03-27
Last modified: 2026-06-17

Description

Stack-based buffer overflow in the Windows installer for NTP before 4.2.8p10 and 4.3.x before 4.3.94 allows local users to have unspecified impact via an application path on the command line.

Frequently asked questions

What is CVE-2017-6452?: Stack-based buffer overflow in the Windows installer for NTP before 4.2.8p10 and 4.3.x before 4.3.94 allows local users to have unspecified impact via an application path on the command line.
How severe is CVE-2017-6452?: CVE-2017-6452 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-6452 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-6452?: CVE-2017-6452 primarily affects Ntp. In total, 95 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-6452?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-6452 published?: CVE-2017-6452 was published on 2017-03-27 and last updated on 2026-06-17.

References

Affected products (95)

cpe:2.3:a:ntp:ntp:4.2.8:p9:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.0:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.1:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.2:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.3:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.4:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.5:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.6:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.7:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.8:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.9:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.10:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.11:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.12:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.13:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.14:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.15:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.16:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.17:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.18:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.19:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.20:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.21:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.22:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.23:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.24:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.25:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.26:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.27:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.28:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.29:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.30:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.31:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.32:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.33:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.34:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.35:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.36:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.37:*:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.3.38:*:*:*:*:*:*:*

More vulnerabilities in Ntp

CVE-2018-12327 — Critical (CVSS 9.8): Stack-based buffer overflow in ntpq and ntpdc of NTP version 4.2.8p11 allows an attacker to achieve code execution or…
CVE-2018-7183 — Critical (CVSS 9.8): Buffer overflow in the decodearr function in ntpq in ntp 4.2.8p6 through 4.2.8p10 allows remote attackers to execute…
CVE-2015-7871 — Critical (CVSS 9.8): Crypto-NAK packets in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to bypass…
CVE-2015-7853 — Critical (CVSS 9.8): The datalen parameter in the refclock driver in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote…
CVE-2015-7705 — Critical (CVSS 9.8): The rate limiting feature in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to have unspecified…
CVE-2015-7854 — High (CVSS 8.8): Buffer overflow in the password management functionality in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows…

All CVEs affecting Ntp →

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Browse all CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities →

Threat intelligence

Threat-intel indicators referencing this CVE:

197.248.207.139 (ipv4-addr)
135.129.128.247 (ipv4-addr)
119.201.59.224 (ipv4-addr)
125.212.244.35 (ipv4-addr)
186.182.105.49 (ipv4-addr)
202.29.220.126 (ipv4-addr)
93.42.227.251 (ipv4-addr)
82.209.191.11 (ipv4-addr)