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CVE-2019-8936

21
FAUCET Score

CVE-2019-8936 describes a NULL Pointer Dereference vulnerability in NTP versions up to 4.2.8p12, impacting products from vendors like fedoraproject, hpe, netapp, and opensuse. This vulnerability carries a CVSS score of 7.5 (High), indicating it can be exploited remotely with low attack complexity, leading to high availability impact (denial of service) without requiring user interaction or privileges. Despite its high severity, 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
< 9.2CPE matchmatch criteria
cpe:2.3:o:netapp:clustered_data_ontap:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:netapp:data_ontap:-:*:*:*:*:7-mode:*:*
28CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:*
29CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
30CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
5.73%
Probability of exploitation in next 30 days
EPSS Percentile
92.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0573 is in the 87th percentile among its peer group of 51,551 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, 0.1 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

Vendor Advisories (1)

redhatCVE-2019-8936Moderate

ntp: Crafted null dereference attack in authenticated mode 6 packet

Mar 7, 2019

References

bugs.ntp.org / show_bug.cgi
ExploitIssue TrackingVendor Advisory
lists.opensuse.org / opensuse-security-announce/2019-04/msg00032.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2019-04/msg00036.html
Mailing ListThird Party Advisory
packetstormsecurity.com / files/152915/FreeBSD-Security-Advisory-FreeBSD-SA-19-04.ntp.html
Third Party AdvisoryVDB Entry
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/2NVS2CSG2TQ663CXOZZUJN4STQPMENNP
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/JBGXY7OKWOLT6X6JAPVZRFEP4FLCGGST
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/KQDNHNYOJK2SRSGO23GQ2RXTOUY2HLNN
seclists.org / bugtraq/2019/May/39
Issue TrackingMailing ListThird Party Advisory
security.freebsd.org / advisories/FreeBSD-SA-19:04.ntp.asc
MitigationThird Party Advisory
security.gentoo.org / glsa/201903-15
Third Party Advisory
security.netapp.com / advisory/ntap-20190503-0001
PatchThird Party Advisory
support.f5.com / csp/article/K61363039
Third Party Advisory
support.hpe.com / hpsc/doc/public/display
Third Party Advisory
support.ntp.org / bin/view/Main/SecurityNotice
Release NotesVendor Advisory
usn.ubuntu.com / 4563-1