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CVE-2016-2774
ISC DHCP 4.1.x before 4.1-ESV-R13 and 4.2.x and 4.3.x before 4.3.4 does not restrict the number of concurrent TCP sessions, which allows…
Medium5.9EPSS 73.6%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
ISC DHCP 4.1.x before 4.1-ESV-R13 and 4.2.x and 4.3.x before 4.3.4 does not restrict the number of concurrent TCP sessions, which allows remote attackers to cause a denial of service (INSIST assertion failure or request-processing outage) by establishing many sessions.
Timeline
ID reserved
By mitre
- 12 days later
· 12 days 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 | 3.1 | Medium5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 73.6% · top 0.5% of all CVEs (8 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.
Weakness
Affected products
n/a
- affected n/a
References (10)
- RHSA-2016:2590 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 1035196 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- https://kb.isc.org/article/AA-01354 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- FEDORA-2016-821f013cb1 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- USN-3586-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- openSUSE-SU-2016:1843 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- FEDORA-2016-c93d49faf3 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- 84208 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- [debian-lts-announce] 20191124 [SECURITY] [DLA 2003-1] isc-dhcp security update (opens in a new tab)mailing-listx_refsource_MLISTx_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)
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[](https://cveledger.app/cve/CVE-2016-2774)Record last updated .