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CVE-2019-4055

26
FAUCET Score

CVE-2019-4055 describes a denial of service vulnerability affecting IBM MQ versions 8.0.0.0 through 8.0.0.10, 9.0.0.0 through 9.0.0.5, and 9.1.0.0 through 9.1.1, specifically within its TLS key renegotiation function. This vulnerability carries a CVSS score of 7.5 (High), indicating it can be exploited remotely with low attack complexity, requiring no user interaction or privileges, and leading to a complete loss of availability (denial of service). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 8.0.0.0, <= 8.0.0.10CPE matchmatch criteria
cpe:2.3:a:ibm:mq:*:*:*:*:*:*:*:*
>= 9.0.0.0, <= 9.0.0.5CPE matchmatch criteria
cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:*
>= 9.1.0, <= 9.1.1CPE matchmatch criteria
cpe:2.3:a:ibm:mq:*:*:*:*:continuous_delivery:*:*:*
>= 9.1.0.0, <= 9.1.0.1CPE matchmatch criteria
cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:*
>= 8.0.0.0, <= 8.0.0.10CPE matchmatch criteria
cpe:2.3:a:ibm:mq_appliance:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.15%
Probability of exploitation in next 30 days
EPSS Percentile
80.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0215 is in the 65th 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/156564
VDB EntryVendor Advisory
ibm.com / support/docview.wss
PatchVendor Advisory
securityfocus.com / bid/108027
Third Party AdvisoryVDB Entry