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CVE-2016-4432

33
FAUCET Score

CVE-2016-4432 describes an authentication bypass vulnerability in Apache Qpid Java versions prior to 6.0.3, specifically affecting its AMQP 0-8, 0-9, 0-91, and 0-10 connection handling. This flaw, related to connection state logging, allows remote, unauthenticated attackers to perform unauthorized actions. With a CVSS score of 9.1 (CRITICAL), it presents a high risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality and integrity. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.0.3CPE matchmatch criteria
cpe:2.3:a:apache:qpid_broker-j:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
8.15%
Probability of exploitation in next 30 days
EPSS Percentile
94.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0815 is in the 89th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

mavenpatch availablevia ghsa
Product: org.apache.qpid:qpid-broker-plugins-amqp-0-8-protocolFixed in: 6.0.3
mavenpatch availablevia ghsa
Product: org.apache.qpid:qpid-broker-plugins-amqp-1-0-protocolFixed in: 6.0.3
redhatend of lifevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: qpid-java
redhatend of lifevia redhat_api
Product: Red Hat Enterprise MRG 3Fixed in: qpid-java
redhatend of lifevia redhat_api
Product: Red Hat Satellite 6Fixed in: qpid-java

Vendor Advisories (2)

mavenGHSA-q66c-h853-gqw2critical

AMQP 0-8, 0-9, 0-91, and 0-10 connection handling in Apache Qpid Java before 6.0.3 might allow remote attackers to bypass authentication

Oct 16, 2018
redhatCVE-2016-4432Important

qpid-java: Authentication bypass

May 27, 2016

References

mail-archives.apache.org / mod_mbox/qpid-users/201605.mbox/%3CCAFEMS4tXDKYxKVMmU0zTb_7uzduoUS4_RePnUwz1tj%2BGQLNw5Q%40mail.gmail.com%3E
Vendor Advisory
packetstormsecurity.com / files/137216/Apache-Qpid-Java-Broker-6.0.2-Authentication-Bypass.html
Third Party AdvisoryVDB Entry
issues.apache.org / jira/browse/QPID-7257
Issue TrackingVendor Advisory
svn.apache.org / viewvc
PatchVendor Advisory
svn.apache.org / viewvc
PatchVendor Advisory
securityfocus.com / archive/1/538508/100/0/threaded
Third Party AdvisoryVDB Entry
securitytracker.com / id/1035983
Broken LinkThird Party AdvisoryVDB Entry