How severe is CVE-2021-23923?

CVE-2021-23923 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2021-23923 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-23923?

CVE-2021-23923 affects Devolutions Devolutions Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-23923?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-23923 published?

CVE-2021-23923 was published on 2021-04-01 and last updated on 2026-06-17.

CVE-2021-23923

CVE-2021-23923 is a high-severity vulnerability in Devolutions Devolutions Server with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 4.9
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Devolutions Devolutions Server
Published: 2021-04-01
Last modified: 2026-06-17

Description

An issue was discovered in Devolutions Server before 2020.3. There is Broken Authentication with Windows domain users.

Frequently asked questions

What is CVE-2021-23923?: An issue was discovered in Devolutions Server before 2020.3. There is Broken Authentication with Windows domain users.
How severe is CVE-2021-23923?: CVE-2021-23923 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2021-23923 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-23923?: CVE-2021-23923 affects Devolutions Devolutions Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-23923?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-23923 published?: CVE-2021-23923 was published on 2021-04-01 and last updated on 2026-06-17.

References

https://devolutions.net/security/advisories/devo-2021-0002

Affected products (1)

cpe:2.3:a:devolutions:devolutions_server:*:*:*:*:*:*:*:*

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