What is CVE-2026-4064?

CVE-2026-4064 is a high-severity vulnerability in Devolutions Powershell Universal, classified under Missing Authorization. CVSS score: 8.3/10. Published 2026-03-17.

How severe is CVE-2026-4064?

High severity. CVSS v3 base score is 8.3 out of 10.

Auth bypass in Devolutions Powershell Universal

CVE-2026-4064

Missing authorization checks on multiple gRPC service endpoints in PowerShell Universal before 2026.1.4 allows an authenticated user with any valid token to bypass role-based access controls and perform privileged operations — including re…

Vulnerability class: Broken Access Control

EPSS: 0.003 (24.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.

Affected products

Devolutions Powershell Universal — versions 2026.1.0
Ironmansoftware Powershell_universal

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

security@devolutions.net (Vendor Advisory)

Frequently asked questions

What is CVE-2026-4064?: CVE-2026-4064 is a high-severity vulnerability in Devolutions Powershell Universal, classified under Missing Authorization. CVSS score: 8.3/10. Published 2026-03-17.
How severe is CVE-2026-4064?: High severity. CVSS v3 base score is 8.3 out of 10.