Is CVE-2012-3955 in the CISA KEV catalog?

No. CVE-2012-3955 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2012-3955?

CVE-2012-3955 has a CVSS v2 base score of 7.1 (HIGH).

What is the EPSS score for CVE-2012-3955?

CVE-2012-3955 has an EPSS score of 21.65% (97th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2012-3955

HIGHEPSS 97th pctl

7.1

CVSS v2

NVD

Description

ISC DHCP 4.1.x before 4.1-ESV-R7 and 4.2.x before 4.2.4-P2 allows remote attackers to cause a denial of service (daemon crash) in opportunistic circumstances by establishing an IPv6 lease in an environment where the lease expiration time is later reduced.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

21.65%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

http://lists.fedoraproject.org/pipermail/package-announce/2012-October/088882.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-September/086992.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-September/088220.html
http://lists.opensuse.org/opensuse-updates/2012-09/msg00088.html
http://lists.opensuse.org/opensuse-updates/2012-09/msg00103.html
http://lists.opensuse.org/opensuse-updates/2012-09/msg00105.html
http://rhn.redhat.com/errata/RHSA-2013-0504.html
http://secunia.com/advisories/51318
http://security.gentoo.org/glsa/glsa-201301-06.xml
http://www.debian.org/security/2012/dsa-2551
http://www.mandriva.com/security/advisories?name=MDVSA-2012:153
http://www.securityfocus.com/bid/55530
http://www.securitytracker.com/id?1027528
http://www.ubuntu.com/usn/USN-1571-1
https://blogs.oracle.com/sunsecurity/entry/cve_2012_3955_denial_of
https://kb.isc.org/article/AA-00779

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.