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Vulnerability record · CVE-2016-4051 · published 25 April 2016

CVE-2016-4051: Canonical ubuntu linux memory buffer overflow vulnerability

Canonical · Ubuntu Linux

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.

8.8 CVSS 3.0 High EPSS 18% · top 2.9% CWE-119 · Memory buffer overflow
8.8CVSS 3.0 base score, v2 6.8
18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
34References
17 Jun 2026Last modified by NVD

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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/2016/04/20/6 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/04/20/9 Mailing ListThird Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html PatchThird Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html Third Party Advisory
http://www.securityfocus.com/bid/86788
http://www.securityfocus.com/bid/91787 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1035646 Third Party AdvisoryVDB Entry
http://www.squid-cache.org/Advisories/SQUID-2016_5.txt Vendor Advisory
http://www.ubuntu.com/usn/USN-2995-1 Third 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/2016/04/20/6 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/04/20/9 Mailing ListThird Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html PatchThird Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html Third Party Advisory
http://www.securityfocus.com/bid/86788
http://www.securityfocus.com/bid/91787 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1035646 Third Party AdvisoryVDB Entry
http://www.squid-cache.org/Advisories/SQUID-2016_5.txt Vendor Advisory
http://www.ubuntu.com/usn/USN-2995-1 Third 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

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Source: NIST National Vulnerability Database (record CVE-2016-4051), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.