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CVE-2019-4227

23
FAUCET Score

CVE-2019-4227 describes a session fixation vulnerability in IBM MQ AMQP Listeners across several versions (8.0.0.4-8.0.0.12, 9.0.0.0-9.0.0.6, 9.1.0.0-9.1.0.2, and 9.1.0-9.1.2). This flaw allows an unauthorized user to conduct a session fixation attack because clients are not disconnected as expected. With a CVSS v3.1 score of 7.3 (HIGH), this vulnerability is remotely exploitable with low attack complexity, requiring no user interaction or privileges. A successful attack could lead to low impacts on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, and no public exploit code is available on platforms like Metasploit or ExploitDB. The vulnerability has received minimal community discussion and media coverage, indicating a low level of public attention.

Impacted Technologies

VendorProductVersion(s)CPE
>= 8.0.0.4, <= 8.0.0.12CPE matchmatch criteria
cpe:2.3:a:ibm:mq:*:*:*:*:*:*:*:*
>= 9.0.0.0, <= 9.0.0.6CPE matchmatch criteria
cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:*
>= 9.1.0, <= 9.1.2CPE matchmatch criteria
cpe:2.3:a:ibm:mq:*:*:*:*:continuous_delivery:*:*:*
>= 9.1.0.0, <= 9.1.0.2CPE matchmatch criteria
cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.6MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.2
Impact Score
3.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.11%
Probability of exploitation in next 30 days
EPSS Percentile
62.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0111 is in the 40th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/159352
VDB EntryVendor Advisory
ibm.com / support/pages/node/886899
Vendor Advisory