How severe is CVE-2020-4592?

CVE-2020-4592 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2020-4592 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-4592?

CVE-2020-4592 primarily affects Ibm Mq Appliance. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-4592?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-4592 published?

CVE-2020-4592 was published on 2020-11-18 and last updated on 2026-06-17.

CVE-2020-4592

CVE-2020-4592 is a medium-severity vulnerability in Ibm Mq Appliance with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 3.5
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ibm Mq Appliance
Published: 2020-11-18
Last modified: 2026-06-17

Description

IBM MQ Appliance 9.1.CD and LTS could allow an authenticated user, under nondefault configuration to cause a data corruption attack due to an error when using segmented messages.

Frequently asked questions

What is CVE-2020-4592?: IBM MQ Appliance 9.1.CD and LTS could allow an authenticated user, under nondefault configuration to cause a data corruption attack due to an error when using segmented messages.
How severe is CVE-2020-4592?: CVE-2020-4592 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2020-4592 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-4592?: CVE-2020-4592 primarily affects Ibm Mq Appliance. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-4592?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-4592 published?: CVE-2020-4592 was published on 2020-11-18 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ibm:mq_appliance:9.1.0.0:*:*:*:continuous_delivery:*:*:*
cpe:2.3:a:ibm:mq_appliance:9.1.0.0:*:*:*:lts:*:*:*

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