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CVE-2015-7975

17
FAUCET Score

CVE-2015-7975 describes a denial-of-service vulnerability in the nextvar function of NTP versions before 4.2.8p6 and 4.3.x before 4.3.90, caused by improper input length validation. This flaw carries a CVSS v3 score of 6.2 (Medium) and can be exploited locally with low attack complexity, leading to an application crash. 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:*:p5:*:*:*:*:*:*
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

6.2MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.5
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.64%
Probability of exploitation in next 30 days
EPSS Percentile
46.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0064 is in the 83rd percentile among its peer group of 3,050 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Vendor Advisories (1)

redhatCVE-2015-7975Low

ntp: nextvar() missing length check in ntpq

Jan 20, 2016

References

lists.opensuse.org / opensuse-security-announce/2016-04/msg00059.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-04/msg00060.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-05/msg00020.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-05/msg00038.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-05/msg00048.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-07/msg00026.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-08/msg00042.html
Third Party Advisory
lists.opensuse.org / opensuse-updates/2016-05/msg00114.html
Third Party Advisory
bto.bluecoat.com / security-advisory/sa113
Third Party Advisory
h20566.www2.hpe.com / hpsc/doc/public/display
h20566.www2.hpe.com / hpsc/doc/public/display
security.freebsd.org / advisories/FreeBSD-SA-16:09.ntp.asc
security.gentoo.org / glsa/201607-15
Third Party Advisory
security.netapp.com / advisory/ntap-20171031-0001
support.ntp.org / bin/view/Main/NtpBug2937
Vendor Advisory
kb.cert.org / vuls/id/718152
Third Party AdvisoryUS Government Resource
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20160127-ntpd
Third Party Advisory
securityfocus.com / bid/81959
Third Party AdvisoryVDB Entry
securitytracker.com / id/1034782
Third Party AdvisoryVDB Entry
ubuntu.com / usn/USN-3096-1
Third Party Advisory