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 remote attackers to cause a denial of service (INSIST assertion failure or request-processing outage) by…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 73.6%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 73.62% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- isc/dhcp · debian/debian linux · canonical/ubuntu linux
- Source
- cve@mitre.org
EPSS 73.6% since 4 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183458.htmlThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183640.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2016-07/msg00066.htmlMailing List, Third Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2590.htmlThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.htmlThird Party Advisory
- http://www.securityfocus.com/bid/84208Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1035196Third Party Advisory, VDB Entry
- https://kb.isc.org/article/AA-01354Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2019/11/msg00023.htmlThird Party Advisory
- https://usn.ubuntu.com/3586-1/Third Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183458.htmlThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183640.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2016-07/msg00066.htmlMailing List, Third Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2590.htmlThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.htmlThird Party Advisory
- http://www.securityfocus.com/bid/84208Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1035196Third Party Advisory, VDB Entry
- https://kb.isc.org/article/AA-01354Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2019/11/msg00023.htmlThird Party Advisory
- https://usn.ubuntu.com/3586-1/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.