CVE-2026-4064CWE-862

Missing authorization checks on multiple gRPC service endpoints in PowerShell Universal before 2026.1.4 allows an authenticated user with any valid token to…

High · published March 17, 2026

CVSS v3.1
8.3
EPSS
0%
Percentile
32.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.00391 · 32.1th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-03-17T19:14Z
EPSS history
Timeline
  • 17 MAR 19:14Z
    Missing authorization checks on multiple gRPC service endpoints in PowerShell Universal before 2026.1.4 allows an authenticated user with any valid token to…
    cvelistv5