CVE-2020-3944Network attack vector

Unauthenticated access via improper trust store

Published Feb 19, 2020 · Updated Aug 4, 2024

Authentication bypass in VMware vRealize Operations for Horizon Adapter 6.6.x and 6.7.x allows remote attackers to bypass Adapter authentication via network access. The adapter's trust store is configured improperly, so its authentication validation accepts an unauthenticated request when the Horizon Adapter is running. Any unauthenticated attacker able to reach the vRealize Operations service can obtain adapter access; the advisory does not report configuration changes or service interruption.

CVSS severity8.6
High
EPSS probability1.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in VMware vRealize Operations for Horizon Adapter 6.6.x and 6.7.x allows remote attackers to bypass Adapter authentication via network access. The adapter's trust store is configured improperly, so its authentication validation accepts an unauthenticated request when the Horizon Adapter is running. Any unauthenticated attacker able to reach the vRealize Operations service can obtain adapter access; the advisory does not report configuration changes or service interruption.

The record

CVE
CVE-2020-3944
Published
Feb 19, 2020
Updated
Aug 4, 2024
Vendor
VMware
Product
VMware vRealize Operations for Horizon Adapter
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 19, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.6.x prior to 6.6.1
  2. Affected versionversion=6.7.x prior to 6.7.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

VMware · VMware vRealize Operations for Horizon Adapterversion=6.6.x prior to 6.6.1; version=6.7.x prior to 6.7.1

Published CVSS scores

8.6NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
5.0NVDAV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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