CVE-2026-4064HIGH 8.3EPSS p25.0%
CVE-2026-4064CVE-2026-4064
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.
Scoring
| CVSS 3.1 | 8.3 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L |
| EPSS | 0.33% probability of exploitation · percentile 25.0% · 2026-08-03T12:00:16Z |
| Published | 2026-03-17 |
| Last modified | 2026-03-19 |
Underlying weaknesses· 1
References
1
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Missing Authorizationcwe-862 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.