CVE-2021-23923Network attack vector

Cross-user vault access through server-selected identity

Published Apr 1, 2021 · Updated Aug 3, 2024

Broken authentication in Devolutions Server 2020.2 and earlier allows remote authenticated users to access another user's stored passwords. When automatic domain-user creation is enabled, the domain sign-in flow binds the session to another user selected by server-side configuration rather than the intended identity. A Windows domain account is required, attackers cannot choose the impersonated user, and exposure is limited to data available to that assigned account, including private-vault entries.

CVSS severity8.1
High
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Broken authentication in Devolutions Server 2020.2 and earlier allows remote authenticated users to access another user's stored passwords. When automatic domain-user creation is enabled, the domain sign-in flow binds the session to another user selected by server-side configuration rather than the intended identity. A Windows domain account is required, attackers cannot choose the impersonated user, and exposure is limited to data available to that assigned account, including private-vault entries.

The record

CVE
CVE-2021-23923
Published
Apr 1, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-287, T1078.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 1, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
4.9NIST NVDAV:N/AC:M/Au:S/C:P/I:P/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1078.002Domain 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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