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CVE-2016-8629

19
FAUCET Score

CVE-2016-8629 describes a permission bypass vulnerability in Red Hat Keycloak before version 2.4.0, affecting Red Hat Enterprise Linux Server and Single Sign-On. An authenticated attacker with service account privileges could exploit this flaw to delete users in a different realm. Rated MEDIUM with a CVSSv3 score of 6.5, this vulnerability has a low attack complexity and high impact on integrity, but no impact on confidentiality or availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.4.0CPE matchmatch criteria
cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*
7.1CPE matchmatch criteria
cpe:2.3:a:redhat:single_sign_on:7.1:*:*:*:*:*:*:*
7.2CPE matchmatch criteria
cpe:2.3:a:redhat:single_sign_on:7.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.94%
Probability of exploitation in next 30 days
EPSS Percentile
78.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0194 is in the 90th percentile among its peer group of 21,958 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 (19)

mavenpatch availablevia ghsa
Product: org.keycloak:keycloak-coreFixed in: 2.4.0
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.1 for RHEL 6Fixed in: rh-sso7-0:1-2.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.1 for RHEL 6Fixed in: rh-sso7-freemarker-0:2.3.23-1.redhat_2.2.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.1 for RHEL 6Fixed in: rh-sso7-javapackages-tools-0:3.4.1-5.15.3.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.1 for RHEL 6Fixed in: rh-sso7-keycloak-0:2.5.5-2.Final_redhat_1.1.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.1 for RHEL 6Fixed in: rh-sso7-libunix-dbus-java-0:0.8.0-2.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.1 for RHEL 6Fixed in: rh-sso7-liquibase-0:3.4.1-2.redhat_2.1.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.1 for RHEL 6Fixed in: rh-sso7-twitter4j-0:4.0.4-1.redhat_3.1.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.1 for RHEL 6Fixed in: rh-sso7-zxing-0:3.2.1-1.redhat_4.1.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.1 for RHEL 7Fixed in: rh-sso7-0:1-2.jbcs.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.1 for RHEL 7Fixed in: rh-sso7-freemarker-0:2.3.23-1.redhat_2.2.jbcs.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.1 for RHEL 7Fixed in: rh-sso7-javapackages-tools-0:3.4.1-5.15.3.jbcs.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.1 for RHEL 7Fixed in: rh-sso7-keycloak-0:2.5.5-2.Final_redhat_1.1.jbcs.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.1 for RHEL 7Fixed in: rh-sso7-libunix-dbus-java-0:0.8.0-2.jbcs.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.1 for RHEL 7Fixed in: rh-sso7-liquibase-0:3.4.1-2.redhat_2.1.jbcs.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.1 for RHEL 7Fixed in: rh-sso7-twitter4j-0:4.0.4-1.redhat_3.1.jbcs.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.1 for RHEL 7Fixed in: rh-sso7-zxing-0:3.2.1-1.redhat_4.1.jbcs.el7
View patch
redhatvendor investigatingvia nvd_reference
View patch

Vendor Advisories (2)

mavenGHSA-778x-2mqv-w6xwmedium

Moderate severity vulnerability that affects org.keycloak:keycloak-core

Oct 18, 2018
redhatCVE-2016-8629Moderate

keycloak: user deletion via incorrect permissions check

Apr 4, 2017

References

rhn.redhat.com / errata/RHSA-2017-0876.html
Third Party Advisory
access.redhat.com / errata/RHSA-2017:0872
Vendor Advisory
access.redhat.com / errata/RHSA-2017:0873
Vendor Advisory
bugzilla.redhat.com / show_bug.cgi
Issue Tracking
securityfocus.com / bid/97392
Third Party AdvisoryVDB Entry
securitytracker.com / id/1038180
Third Party AdvisoryVDB Entry