LOW
CVE-2015-1798
CWE-17Published: April 8, 2015· Updated: Jun 17, 2026
1.8
CVSS v3.1
Official Description
The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p2 requires a correct MAC only if the MAC field has a nonzero length, which makes it easier for man-in-the-middle attackers to spoof packets by omitting the MAC.
Technical Analysis
CVE-2015-1798 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorAdjacent
Attack ComplexityHigh
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityNone
IntegrityP
AvailabilityNone
AV:A/AC:H/Au:N/C:N/I:P/A:N
Affected Vendors & Products
ntp1 product(s)
ntp
Source: NVD CPE · 1 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 (42)
→
http://www.kb.cert.org/vuls/id/374268Third Party Advisory · US Government Resource
Quick Facts
CVE IDCVE-2015-1798
CVSS Score1.8 / 10
SeverityLOW
WeaknessCWE-17
CISA KEVNo
Affected1 vendor(s)
PublishedApr 8, 2015
Related CVEs (CWE-17)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2015-1798 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.