Authenticated privilege bypass via unchecked gRPC authorization
Published Mar 17, 2026 · Updated Mar 17, 2026
Authorization bypass in Devolutions PowerShell Universal before 2026.1.4 allows remote authenticated users to perform privileged operations. Multiple gRPC service endpoints accept any valid token without enforcing endpoint-specific role-based authorization. Any authenticated account can read sensitive data, create or delete resources, and interrupt service operations with crafted gRPC requests.
Summary
What happened
Authorization bypass in Devolutions PowerShell Universal before 2026.1.4 allows remote authenticated users to perform privileged operations. Multiple gRPC service endpoints accept any valid token without enforcing endpoint-specific role-based authorization. Any authenticated account can read sensitive data, create or delete resources, and interrupt service operations with crafted gRPC requests.
The record
- CVE
- CVE-2026-4064
- Published
- Mar 17, 2026
- Updated
- Mar 17, 2026
- Vendor
- Ironman Software
- Product
- PowerShell Universal
- Classifications
- CWE-862, T1210
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 17, 2026CVE publishedPublication date reported by the CVE source.
- Mar 17, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2026.1.0 <2026.1.4
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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