Is CVE-2013-5211 in the CISA KEV catalog?

No. CVE-2013-5211 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2013-5211?

CVE-2013-5211 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2013-5211?

CVE-2013-5211 has an EPSS score of 97.55% (100th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2013-5211

MEDIUMEPSS 100th pctl

5.0

CVSS v2

NVD

Description

The monlist feature in ntp_request.c in ntpd in NTP before 4.2.7p26 allows remote attackers to cause a denial of service (traffic amplification) via forged (1) REQ_MON_GETLIST or (2) REQ_MON_GETLIST_1 requests, as exploited in the wild in December 2013.

CWE-20Improper Input Validation

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

97.55%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

References

http://aix.software.ibm.com/aix/efixes/security/ntp_advisory.asc
http://bugs.ntp.org/show_bug.cgi?id=1532
http://ics-cert.us-cert.gov/advisories/ICSA-14-051-04
http://lists.ntp.org/pipermail/pool/2011-December/005616.html
http://lists.opensuse.org/opensuse-updates/2014-09/msg00031.html
http://marc.info/?l=bugtraq&m=138971294629419&w=2
http://marc.info/?l=bugtraq&m=144182594518755&w=2
http://openwall.com/lists/oss-security/2013/12/30/6
http://openwall.com/lists/oss-security/2013/12/30/7
http://secunia.com/advisories/59288
http://secunia.com/advisories/59726
http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5095861
http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5095892
http://www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-dev/ntp-dev-4.2.7p26.tar.gz
http://www.kb.cert.org/vuls/id/348126
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
http://www.securityfocus.com/bid/64692
http://www.securitytracker.com/id/1030433
http://www.us-cert.gov/ncas/alerts/TA14-013A
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04790232
https://puppet.com/security/cve/puppetlabs-ntp-nov-2015-advisory

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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.