What is CVE-2021-23923?

CVE-2021-23923 is a high-severity vulnerability in Devolutions Server, classified under Improper Authentication. CVSS score: 8.1/10. Published 2021-04-01.

How severe is CVE-2021-23923?

High severity. CVSS v3 base score is 8.1 out of 10.

Auth bypass in Devolutions Server

CVE-2021-23923

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

Vulnerability class: Broken Authentication

Published 2021-04-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.008 (53.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Devolutions Server

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

devolutions.net/security/advisories/devo-2021-0002 (Vendor Advisory)

Frequently asked questions

What is CVE-2021-23923?: CVE-2021-23923 is a high-severity vulnerability in Devolutions Server, classified under Improper Authentication. CVSS score: 8.1/10. Published 2021-04-01.
How severe is CVE-2021-23923?: High severity. CVSS v3 base score is 8.1 out of 10.