MEDIUM
CVE-2015-7852
CWE-20Published: August 7, 2017· Updated: Jun 17, 2026
5.9
CVSS v3.1
Official Description
ntpq in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service (crash) via crafted mode 6 response packets.
Technical Analysis
CVE-2015-7852 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.9.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Vendors & Products
Debian1 product(s)
debian linux
netapp5 product(s)
oncommand balanceoncommand performance manageroncommand unified managerclustered data ontapdata ontap
ntp1 product(s)
ntp
Oracle1 product(s)
linux
Red Hat6 product(s)
enterprise linux desktopenterprise linux serverenterprise linux server ausenterprise linux server eusenterprise linux server tusenterprise linux workstation
Source: NVD CPE · 29 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (18)
→
http://rhn.redhat.com/errata/RHSA-2016-0780.htmlThird Party Advisory
→
http://rhn.redhat.com/errata/RHSA-2016-2583.htmlThird Party Advisory
→
http://support.ntp.org/bin/view/Main/NtpBug2919Patch · Vendor Advisory
→
http://www.debian.org/security/2015/dsa-3388Third Party Advisory
→
→
http://www.securityfocus.com/bid/77288Third Party Advisory · VDB Entry
→
http://www.securitytracker.com/id/1033951Third Party Advisory · VDB Entry
→
https://security.gentoo.org/glsa/201607-15Third Party Advisory · VDB Entry
→
https://security.netapp.com/advisory/ntap-20171004-0001/Third Party Advisory
→
http://rhn.redhat.com/errata/RHSA-2016-0780.htmlThird Party Advisory
→
http://rhn.redhat.com/errata/RHSA-2016-2583.htmlThird Party Advisory
→
http://support.ntp.org/bin/view/Main/NtpBug2919Patch · Vendor Advisory
→
http://www.debian.org/security/2015/dsa-3388Third Party Advisory
→
→
http://www.securityfocus.com/bid/77288Third Party Advisory · VDB Entry
Quick Facts
CVE IDCVE-2015-7852
CVSS Score5.9 / 10
SeverityMEDIUM
WeaknessCWE-20
CISA KEVNo
Affected5 vendor(s)
PublishedAug 7, 2017
Related CVEs (CWE-20)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2015-7852 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.