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CVE-2015-5194

22
FAUCET Score

CVE-2015-5194 describes a denial-of-service vulnerability in NTP versions prior to 4.2.7p42, specifically within the log_config_command function, affecting various Linux distributions and the NTP daemon itself. With a CVSS score of 7.5 (High), this vulnerability can be exploited remotely with low complexity, requiring no user interaction or privileges, to crash the ntpd service. Despite its severity, there is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
21CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*
22CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*
11CPE matchmatch criteria
cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp2:*:*:*:*:*:*
11CPE matchmatch criteria
cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp3:*:*:*:*:*:*
10CPE matchmatch criteria
cpe:2.3:o:suse:linux_enterprise_server:10:sp4:*:*:ltss:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
5.54%
Probability of exploitation in next 30 days
EPSS Percentile
92.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0554 is in the 86th percentile among its peer group of 51,466 CVEs.

Social Chatter

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

Patch Available

Vendor Patches (5)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: ntp-0:4.2.6p5-10.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: ntp-0:4.2.6p5-25.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: ntp

Vendor Advisories (1)

redhatCVE-2015-5194Low

ntp: crash with crafted logconfig configuration command

Aug 25, 2015

References

bk1.ntp.org / ntp-dev
Issue TrackingPatchVendor Advisory
lists.fedoraproject.org / pipermail/package-announce/2015-November/170926.html
Third Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2015-October/169167.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
rhn.redhat.com / errata/RHSA-2016-0780.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2016-2583.html
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatch
github.com / ntp-project/ntp/commit/553f2fa65865c31c5e3c48812cfd46176cffdd27
Issue TrackingPatchThird Party Advisory
www-01.ibm.com / support/docview.wss
Third Party Advisory
www-01.ibm.com / support/docview.wss
Third Party Advisory
www-01.ibm.com / support/docview.wss
Third Party Advisory
www-01.ibm.com / support/docview.wss
Third Party Advisory
www-01.ibm.com / support/docview.wss
Third Party Advisory
debian.org / security/2015/dsa-3388
Third Party Advisory
openwall.com / lists/oss-security/2015/08/25/3
Mailing ListPatchThird Party Advisory
oracle.com / technetwork/topics/security/linuxbulletinapr2016-2952096.html
securityfocus.com / bid/76475
Third Party AdvisoryVDB Entry
ubuntu.com / usn/USN-2783-1
Third Party Advisory