CVE-2016-4051

Name: CVE-2016-4051
Creator: NVD / NIST
Published: 2016-04-25T14:59:02.267+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 16.82%

Last modified Jun 17, 2026

CVE-2016-4051 is a vulnerability of currently unknown severity. Buffer overflow in cachemgr.cgi in Squid 2.x, 3.x before 3.5.17, and 4.x before 4.0.9 might allow remote attackers to cause a denial of service or execute arbitrary code by seeding manager reports with crafted data.. EPSS estimates a 16.82% chance of exploitation in the next 30 days.

Description

Buffer overflow in cachemgr.cgi in Squid 2.x, 3.x before 3.5.17, and 4.x before 4.0.9 might allow remote attackers to cause a denial of service or execute arbitrary code by seeding manager reports with crafted data.

Metrics

EPSS Probability

16.82%

96.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Canonical	Ubuntu Linux	12.04
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	15.10
Canonical	Ubuntu Linux	16.04
Oracle	Linux	6
Oracle	Linux	7
Squid-Cache	Squid	2.0
Squid-Cache	Squid	2.1
Squid-Cache	Squid	2.2
Squid-Cache	Squid	2.3
Squid-Cache	Squid	2.4
Squid-Cache	Squid	2.5
Squid-Cache	Squid	2.6
Squid-Cache	Squid	2.7
Squid-Cache	Squid	3.0
Squid-Cache	Squid	3.1
Squid-Cache	Squid	3.1.0.1
Squid-Cache	Squid	3.1.0.2
Squid-Cache	Squid	3.1.0.3
Squid-Cache	Squid	3.1.0.4
Squid-Cache	Squid	3.1.0.5
Squid-Cache	Squid	3.1.0.6
Squid-Cache	Squid	3.1.0.7
Squid-Cache	Squid	3.1.0.8
Squid-Cache	Squid	3.1.0.9
Squid-Cache	Squid	3.1.0.10
Squid-Cache	Squid	3.1.0.11
Squid-Cache	Squid	3.1.0.12
Squid-Cache	Squid	3.1.0.13
Squid-Cache	Squid	3.1.0.14
Squid-Cache	Squid	3.1.0.15
Squid-Cache	Squid	3.1.0.16
Squid-Cache	Squid	3.1.0.17
Squid-Cache	Squid	3.1.0.18
Squid-Cache	Squid	3.1.1
Squid-Cache	Squid	3.1.2
Squid-Cache	Squid	3.1.3
Squid-Cache	Squid	3.1.4
Squid-Cache	Squid	3.1.5
Squid-Cache	Squid	3.1.5.1
Squid-Cache	Squid	3.1.6
Squid-Cache	Squid	3.1.7
Squid-Cache	Squid	3.1.8
Squid-Cache	Squid	3.1.9
Squid-Cache	Squid	3.1.10
Squid-Cache	Squid	3.1.11
Squid-Cache	Squid	3.1.12
Squid-Cache	Squid	3.1.12.1
Squid-Cache	Squid	3.1.12.2
Squid-Cache	Squid	3.1.12.3

Showing 50 of 154 affected configurations. See NVD for the full list.

References

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html
http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html
http://www.debian.org/security/2016/dsa-3625
http://www.openwall.com/lists/oss-security/2016/04/20/6Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/04/20/9Mailing List, Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.htmlPatch, Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.htmlThird Party Advisory
http://www.securityfocus.com/bid/86788
http://www.securityfocus.com/bid/91787Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1035646Third Party Advisory, VDB Entry
http://www.squid-cache.org/Advisories/SQUID-2016_5.txtVendor Advisory
http://www.ubuntu.com/usn/USN-2995-1Third Party Advisory
https://access.redhat.com/errata/RHSA-2016:1138
https://access.redhat.com/errata/RHSA-2016:1139
https://access.redhat.com/errata/RHSA-2016:1140
https://security.gentoo.org/glsa/201607-01
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html
http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html
http://www.debian.org/security/2016/dsa-3625
http://www.openwall.com/lists/oss-security/2016/04/20/6Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/04/20/9Mailing List, Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.htmlPatch, Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.htmlThird Party Advisory
http://www.securityfocus.com/bid/86788
http://www.securityfocus.com/bid/91787Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1035646Third Party Advisory, VDB Entry
http://www.squid-cache.org/Advisories/SQUID-2016_5.txtVendor Advisory
http://www.ubuntu.com/usn/USN-2995-1Third Party Advisory
https://access.redhat.com/errata/RHSA-2016:1138
https://access.redhat.com/errata/RHSA-2016:1139
https://access.redhat.com/errata/RHSA-2016:1140
https://security.gentoo.org/glsa/201607-01

Timeline

Published: Apr 25, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-4051?

How severe is CVE-2016-4051?

Severity scoring for CVE-2016-4051 is pending analysis. The EPSS model estimates a 16.82% probability of exploitation in the next 30 days.

How do I fix CVE-2016-4051?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-4051?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST