Is CVE-2014-6272 in the CISA KEV catalog?

No. CVE-2014-6272 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2014-6272?

CVE-2014-6272 has a CVSS v2 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2014-6272?

CVE-2014-6272 has an EPSS score of 2.08% (79th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2014-6272?

Upgrade libevent on debian 11 to 2.0.21-stable-2 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2014-6272

HIGHEPSS 79th pctl

7.5

CVSS v2

NVD

Description

Multiple integer overflows in the evbuffer API in Libevent 1.4.x before 1.4.15, 2.0.x before 2.0.22, and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via "insanely large inputs" to the (1) evbuffer_add, (2) evbuffer_expand, or (3) bufferevent_write function, which triggers a heap-based buffer overflow or an infinite loop. NOTE: this identifier has been SPLIT per ADT3 due to different affected versions. See CVE-2015-6525 for the functions that are only affected in 2.0 and later.

CWE-189

How to fix

Remediation Available

libeventDebian

Fixed in:2.0.21-stable-2CVE-2014-6272

libeventUbuntu

Fixed in:2.0.21-stable-1ubuntu1.14.04.1USN-2477-1

libevent-2.0-5Ubuntu

Fixed in:2.0.21-stable-1ubuntu1.14.04.1USN-2477-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

2.08%probability of exploitation in 30 days

79thpercentile

Elevated risk: more likely to be exploited than 79% of all known CVEs.

References

Vendor Advisory1

archives.seul.org

Other references3

Related Vulnerabilities

Other CWE-189 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-1538	High	10.0	99%	-	-
CVE-2006-3747	High	7.6	96%	-	Fix
CVE-2007-0071	High	9.3	93%	-	-
CVE-2015-3829	High	10.0	90%	-	-
CVE-2015-3864	High	10.0	87%	-	-
CVE-2015-1539	High	10.0	86%	-	-

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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 2026-05-06.