CVE-2021-23921Network attack vector

Credential access via unenforced Password List permissions

Published Apr 1, 2021 · Updated Aug 3, 2024

Broken access control in Devolutions Server 2020.2 and earlier allows remote authenticated users to access restricted Password List credentials. When Remote Desktop Manager uses credentials stored in a Password List entry, the server fails to enforce that entry's access-control rules. A low-privileged account can therefore read or use credentials outside its assigned permissions, without affecting service availability.

CVSS severity9.1
Critical
EPSS probability1.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Broken access control in Devolutions Server 2020.2 and earlier allows remote authenticated users to access restricted Password List credentials. When Remote Desktop Manager uses credentials stored in a Password List entry, the server fails to enforce that entry's access-control rules. A low-privileged account can therefore read or use credentials outside its assigned permissions, without affecting service availability.

The record

CVE
CVE-2021-23921
Published
Apr 1, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1555
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

9.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
6.4NVDAV:N/AC:L/Au:N/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.

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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

T1555Credentials from Password Stores

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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