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CVE-2016-2516
NTP before 4.2.8p7 and 4.3.x before 4.3.92, when mode7 is enabled, allows remote attackers to cause a denial of service (ntpd abort) by…
Medium5.3EPSS 8.9%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
NTP before 4.2.8p7 and 4.3.x before 4.3.92, when mode7 is enabled, allows remote attackers to cause a denial of service (ntpd abort) by using the same IP address multiple times in an unconfig directive.
Timeline
ID reserved
By mitre
- 12 months later
· 12 months later
Published
- 8 years later
· 8 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Medium5.3 | CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 8.9% · top 4.7% of all CVEs (9 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
Affected products
n/a
- affected n/a
References (9)
- DSA-3629 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 88180 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- VU#718152 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
- 1035705 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://security.netapp.com/advisory/ntap-20171004-0002/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://support.ntp.org/bin/view/Main/NtpBug3011 (opens in a new tab)x_refsource_CONFIRMx_transferred
- FreeBSD-SA-16:16 (opens in a new tab)vendor-advisoryx_refsource_FREEBSDx_transferred
- GLSA-201607-15 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2016-2516)Record last updated .