How severe is CVE-2020-4466?

CVE-2020-4466 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-2020-4466 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-4466?

CVE-2020-4466 primarily affects Ibm Mq For Hpe Nonstop. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-4466?

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

When was CVE-2020-4466 published?

CVE-2020-4466 was published on 2020-07-20 and last updated on 2026-06-17.

CVE-2020-4466

CVE-2020-4466 is a medium-severity vulnerability in Ibm Mq For Hpe Nonstop 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% (68th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ibm Mq For Hpe Nonstop
Published: 2020-07-20
Last modified: 2026-06-17

Description

IBM MQ for HPE NonStop 8.0.4 and 8.1.0 could allow a remote authenticated attacker could cause a denial of service due to an error within the Queue processing function. IBM X-Force ID: 181563.

Frequently asked questions

What is CVE-2020-4466?: IBM MQ for HPE NonStop 8.0.4 and 8.1.0 could allow a remote authenticated attacker could cause a denial of service due to an error within the Queue processing function. IBM X-Force ID: 181563.
How severe is CVE-2020-4466?: CVE-2020-4466 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-2020-4466 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-4466?: CVE-2020-4466 primarily affects Ibm Mq For Hpe Nonstop. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-4466?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-4466 published?: CVE-2020-4466 was published on 2020-07-20 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ibm:mq_for_hpe_nonstop:8.0.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:mq_for_hpe_nonstop:8.1.0:*:*:*:*:*:*:*

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