CVE-2026-4064

HIGH

PowerShell Universal <2026.1.4 - Privilege Escalation

Title source: llm
STIX 2.1

Description

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 reading sensitive data, creating or deleting resources, and disrupting service operations — via crafted gRPC requests.

References (1)

Core 1

Scores

CVSS v3 8.3
EPSS 0.0032
EPSS Percentile 24.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-862
Status published
Products (2)
Devolutions/PowerShell Universal 2026.1.0 - 2026.1.4
ironmansoftware/powershell_universal < 2026.1.4
Published Mar 17, 2026
Tracked Since Mar 18, 2026