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CVE-2019-4655

18
FAUCET Score

CVE-2019-4655 is a denial-of-service vulnerability affecting IBM MQ versions 9.1.0.0 through 9.1.3, including IBM MQ Appliance. An authenticated user can exploit an error in the Data Conversion routine to reset client connections. This vulnerability has a CVSS score of 4.3 (MEDIUM), indicating a low-complexity attack that requires authentication and results in a low impact on availability. There is no public exploit code available, it is not listed in the KEV catalog, and it has received minimal community discussion or media coverage, suggesting it is not actively exploited.

Impacted Technologies

VendorProductVersion(s)CPE
>= 9.1.0, < 9.1.4CPE matchmatch criteria
cpe:2.3:a:ibm:mq:*:*:*:*:continuous_delivery:*:*:*
>= 9.1.0.0, < 9.1.0.4CPE matchmatch criteria
cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:*
>= 9.1.0, < 9.1.4CPE matchmatch criteria
cpe:2.3:a:ibm:mq_appliance:*:*:*:*:continuous_delivery:*:*:*
>= 9.1.0.0, < 9.1.0.4CPE matchmatch criteria
cpe:2.3:a:ibm:mq_appliance:*:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.26%
Probability of exploitation in next 30 days
EPSS Percentile
66.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0126 is in the 80th percentile among its peer group of 21,977 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

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/170966
VDB EntryVendor Advisory
ibm.com / support/pages/node/1106529
Vendor Advisory