How severe is CVE-2020-4931?

CVE-2020-4931 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 none, and availability high.

Is CVE-2020-4931 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-4931?

CVE-2020-4931 primarily affects Ibm Mq. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-4931?

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

When was CVE-2020-4931 published?

CVE-2020-4931 was published on 2021-02-24 and last updated on 2026-06-17.

CVE-2020-4931

CVE-2020-4931 is a medium-severity vulnerability in Ibm Mq 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: 4.0
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ibm Mq
Published: 2021-02-24
Last modified: 2026-06-17

Description

IBM MQ 9.1 LTS, 9.2 LTS, and 9.1 CD AMQP Channels could allow an authenticated user to cause a denial of service due to an issue processing messages. IBM X-Force ID: 191747.

Frequently asked questions

What is CVE-2020-4931?: IBM MQ 9.1 LTS, 9.2 LTS, and 9.1 CD AMQP Channels could allow an authenticated user to cause a denial of service due to an issue processing messages. IBM X-Force ID: 191747.
How severe is CVE-2020-4931?: CVE-2020-4931 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 none, and availability high.
Is CVE-2020-4931 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-4931?: CVE-2020-4931 primarily affects Ibm Mq. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-4931?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-4931 published?: CVE-2020-4931 was published on 2021-02-24 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:ibm:mq:9.1.0:*:*:*:continuous_delivery:*:*:*
cpe:2.3:a:ibm:mq:9.1.0.0:*:*:*:lts:*:*:*
cpe:2.3:a:ibm:mq:9.2.0.0:*:*:*:lts:*:*:*

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