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TI-2020-03475 Aliases CVE-2020-3977GHSA-564r-7p67-986w

Missing authentication in VMware Horizon DaaS

Priority LOW 31CWE-306Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-306.

Summary

VMware Horizon DaaS (7.x and 8.x before 8.0.1 Update 1) contains a broken authentication vulnerability due to a flaw in the way it handled the first factor authentication. Successful exploitation of this issue may allow an attacker to bypass two-factor authentication process. In order to exploit this issue, an attacker must have a legitimate account on Horizon DaaS.

Why it matters now

EPSS 0.0096 61st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—VMware Horizon DaaSVMware Horizon DaaS (7.x and 8.x before 8.0.1 Update 1)—No fix listedCNA
  • VMware Horizon DaaS Vendor— Affected VMware Horizon DaaS (7.x and 8.x before 8.0.1 Update 1) Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:vmware:horizon_daas:*:*:*:*:*:*:*:*8.0.0 – 8.0.1VulnerableVMware
cpe:2.3:a:vmware:horizon_daas:7.0.0:*:*:*:*:*:*:*7.0.0VulnerableVMware
  • cpe:2.3:a:vmware:horizon_daas:*:*:*:*:*:*:*:* Versions 8.0.0 – 8.0.1 Vulnerable ·VMware
  • cpe:2.3:a:vmware:horizon_daas:7.0.0:*:*:*:*:*:*:* Versions 7.0.0 Vulnerable ·VMware

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-3977
  2. 2026-10-03 Alias added: GHSA-564r-7p67-986w

References

Patch 1

  • TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-05082 Improper authentication in VMware Horizon DaaS CVSS 3.0HIGH 8.8
  • TI-2017-03030 Improper input validation in VMware Horizon DaaS CVSS 3.0MEDIUM 5.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences