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CVE-2016-0763

27
FAUCET Score

CVE-2016-0763 is a medium-severity vulnerability affecting Apache Tomcat versions 7.x, 8.x, and 9.x, as well as various Debian and Ubuntu distributions. It allows remote authenticated users to bypass SecurityManager restrictions due to improper authorization checks in the setGlobalContext method of ResourceLinkFactory. This flaw can lead to unauthorized reading or writing of application data, or cause a denial of service. The vulnerability has a CVSS score of 6.3, indicating a low attack complexity and requiring low privileges. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
7.0.0CPE matchmatch criteria
cpe:2.3:a:apache:tomcat:7.0.0:beta:*:*:*:*:*:*
7.0.2CPE matchmatch criteria
cpe:2.3:a:apache:tomcat:7.0.2:beta:*:*:*:*:*:*
7.0.4CPE matchmatch criteria
cpe:2.3:a:apache:tomcat:7.0.4:beta:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
3.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
11.30%
Probability of exploitation in next 30 days
EPSS Percentile
95.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.1130 is in the 99th percentile among its peer group of 21,954 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (24)

mavenpatch availablevia ghsa
Product: org.apache.tomcat:tomcatFixed in: 7.0.68
mavenpatch availablevia ghsa
Product: org.apache.tomcat:tomcatFixed in: 8.0.32
mavenpatch availablevia ghsa
Product: org.apache.tomcat:tomcatFixed in: 9.0.0.M3
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 6Fixed in: httpd24-0:2.4.6-61.ep7.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3.0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 6Fixed in: mod_security-jws3-0:2.8.0-7.GA.ep7.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 6Fixed in: tomcat7-0:7.0.59-50_patch_01.ep7.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 6Fixed in: tomcat8-0:8.0.18-61_patch_01.ep7.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 7Fixed in: httpd24-0:2.4.6-61.ep7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 7Fixed in: mod_security-jws3-0:2.8.0-7.GA.ep7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 7Fixed in: tomcat7-0:7.0.59-50_patch_01.ep7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 7Fixed in: tomcat8-0:8.0.18-61_patch_01.ep7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: tomcat-0:7.0.69-10.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Web Server 2 for RHEL 6Fixed in: tomcat7-0:7.0.54-23_patch_05.ep6.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Web Server 2 for RHEL 7Fixed in: tomcat7-0:7.0.54-23_patch_05.ep6.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 2.1Fixed in: tomcat7
View patch
redhatno patchvia redhat_api
Product: Red Hat JBoss Portal 6Fixed in: jbossweb
redhatno patchvia redhat_api
Product: Red Hat JBoss Operations Network 3Fixed in: jbossweb
redhatno patchvia redhat_api
Product: Red Hat JBoss Data Grid 6Fixed in: jbossweb
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 5Fixed in: jbossweb
redhatend of lifevia redhat_api
Product: Red Hat JBoss Fuse Service Works 6Fixed in: jbossweb
redhatend of lifevia redhat_api
Product: Red Hat JBoss BRMS 5Fixed in: jbossweb
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 6Fixed in: jbossweb
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 4Fixed in: jbossweb

Vendor Advisories (2)

mavenGHSA-9hjv-9h75-xmppmedium

Improper Verification of Source of a Communication Channel in Apache Tomcat

May 14, 2022
redhatCVE-2016-0763Moderate

tomcat: security manager bypass via setGlobalContext()

Feb 22, 2016

References

lists.fedoraproject.org / pipermail/package-announce/2016-March/179356.html
lists.opensuse.org / opensuse-security-announce/2016-03/msg00047.html
lists.opensuse.org / opensuse-security-announce/2016-03/msg00069.html
lists.opensuse.org / opensuse-security-announce/2016-03/msg00085.html
rhn.redhat.com / errata/RHSA-2016-1089.html
rhn.redhat.com / errata/RHSA-2016-2599.html
rhn.redhat.com / errata/RHSA-2016-2807.html
rhn.redhat.com / errata/RHSA-2016-2808.html
access.redhat.com / errata/RHSA-2016:1087
access.redhat.com / errata/RHSA-2016:1088
bto.bluecoat.com / security-advisory/sa118
seclists.org / bugtraq/2016/Feb/147
h20566.www2.hpe.com / portal/site/hpsc/public/kb/docDisplay
h20566.www2.hpe.com / portal/site/hpsc/public/kb/docDisplay
h20566.www2.hpe.com / portal/site/hpsc/public/kb/docDisplay
lists.apache.org / thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E
security.gentoo.org / glsa/201705-09
security.netapp.com / advisory/ntap-20180531-0001
svn.apache.org / viewvc
svn.apache.org / viewvc
svn.apache.org / viewvc
tomcat.apache.org / security-7.html
Vendor Advisory
tomcat.apache.org / security-8.html
Vendor Advisory
tomcat.apache.org / security-9.html
Vendor Advisory
debian.org / security/2016/dsa-3530
debian.org / security/2016/dsa-3552
debian.org / security/2016/dsa-3609
oracle.com / technetwork/security-advisory/cpuoct2016-2881722.html
oracle.com / technetwork/security-advisory/cpuoct2017-3236626.html
securityfocus.com / bid/83326
securitytracker.com / id/1035069
ubuntu.com / usn/USN-3024-1