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CVE-2020-4375

25
FAUCET Score

CVE-2020-4375 describes a denial-of-service vulnerability in IBM MQ, IBM MQ Appliance, and IBM MQ for HPE NonStop versions 8.0, 9.1 CD, and 9.1 LTS. This flaw stems from a memory leak triggered by an error during dynamic queue creation. With a CVSS score of 7.5 (High), this vulnerability can be exploited remotely without authentication, leading to a complete loss of availability for affected systems. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 8.0, < 8.0.0.15CPE matchmatch criteria
cpe:2.3:a:ibm:mq_appliance:*:*:*:*:*:*:*:*
>= 9.1.0.0, < 9.1.0.6CPE matchmatch criteria
cpe:2.3:a:ibm:mq_appliance:*:*:*:*:lts:*:*:*
>= 9.1.0.0, < 9.2.0.0CPE matchmatch criteria
cpe:2.3:a:ibm:mq_appliance:*:*:*:*:continuous_delivery:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.54%
Probability of exploitation in next 30 days
EPSS Percentile
72.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0154 is in the 54th percentile among its peer group of 51,551 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/179080
VDB EntryVendor Advisory
ibm.com / support/pages/node/6252785
PatchVendor Advisory