How severe is CVE-2020-3944?

CVE-2020-3944 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-3944 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-3944?

CVE-2020-3944 affects Vmware Vrealize Operations. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-3944?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-3944 published?

CVE-2020-3944 was published on 2020-02-19 and last updated on 2026-06-17.

CVE-2020-3944

CVE-2020-3944 is a high-severity vulnerability in Vmware Vrealize Operations with a CVSS 3.x base score of 8.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: High (CVSS 3.x base score 8.6)
CVSS v2: 5.0
EPSS exploit prediction: 1% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Vmware Vrealize Operations
Published: 2020-02-19
Last modified: 2026-06-17

Description

vRealize Operations for Horizon Adapter (6.7.x prior to 6.7.1 and 6.6.x prior to 6.6.1) has an improper trust store configuration leading to authentication bypass. An unauthenticated remote attacker who has network access to vRealize Operations, with the Horizon Adapter running, may be able to bypass Adapter authentication.

Frequently asked questions

What is CVE-2020-3944?: vRealize Operations for Horizon Adapter (6.7.x prior to 6.7.1 and 6.6.x prior to 6.6.1) has an improper trust store configuration leading to authentication bypass. An unauthenticated remote attacker who has network access to vRealize Operations, with the Horizon Adapter running, may be able to bypass Adapter authentication.
How severe is CVE-2020-3944?: CVE-2020-3944 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-3944 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-3944?: CVE-2020-3944 affects Vmware Vrealize Operations. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-3944?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-3944 published?: CVE-2020-3944 was published on 2020-02-19 and last updated on 2026-06-17.

References

https://www.vmware.com/security/advisories/VMSA-2020-0003.html

Affected products (1)

cpe:2.3:a:vmware:vrealize_operations:*:*:*:*:*:horizon:*:*

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