CVE-2021-22057Network attack vector

MFA bypass after first-factor authentication

Published Dec 20, 2021 · Updated Aug 3, 2024

Authentication bypass in VMware Workspace ONE Access 21.08, 20.10.0.1, and 20.10 allows remote authenticated users to bypass VMware Verify MFA. VMware has not disclosed the faulty component or operation within the VMware Verify second-factor authentication flow. Successful first-factor authentication is required, after which the flaw satisfies the second factor and grants access protected by that MFA policy.

CVSS severity6.6
Medium
EPSS probability1.13%
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 Workspace ONE Access 21.08, 20.10.0.1, and 20.10 allows remote authenticated users to bypass VMware Verify MFA. VMware has not disclosed the faulty component or operation within the VMware Verify second-factor authentication flow. Successful first-factor authentication is required, after which the flaw satisfies the second factor and grants access protected by that MFA policy.

The record

CVE
CVE-2021-22057
Published
Dec 20, 2021
Updated
Aug 3, 2024
Vendor
VMware
Product
VMware Workspace ONE Access
Classifications
T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 20, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=VMware Workspace ONE Access 21.08, 20.10.0.1, and 20.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

VMware · VMware Workspace ONE Accessversion=VMware Workspace ONE Access 21.08, 20.10.0.1, and 20.10

Published CVSS scores

6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.6VMwareCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1078Valid Accounts

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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