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Powershell Universal CVE-2026-3563

| EUVD-2026-12636 MEDIUM
Improper Validation of Unsafe Equivalence in Input (CWE-1289)
2026-03-17 DEVOLUTIONS
5.5
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
Low

Lifecycle Timeline

4
Patch available
Apr 16, 2026 - 05:29 EUVD
2026.1.4
EUVD ID Assigned
Mar 17, 2026 - 20:30 euvd
EUVD-2026-12636
Analysis Generated
Mar 17, 2026 - 20:30 vuln.today
CVE Published
Mar 17, 2026 - 19:15 nvd
MEDIUM 5.5

DescriptionNVD

Improper input validation in the apps and endpoints configuration in PowerShell Universal before 2026.1.4 allows an authenticated user with permissions to create or modify Apps or Endpoints to override existing application or system routes, resulting in unintended request routing and denial of service via a conflicting URL path.

AnalysisAI

PowerShell Universal versions before 2026.1.4 contain an improper input validation vulnerability in the apps and endpoints configuration system that allows authenticated users with creation or modification permissions to inject malicious URL paths that override existing application or system routes. This vulnerability can result in unintended request routing where legitimate traffic is redirected to attacker-controlled endpoints, as well as denial of service conditions through route conflicts. …

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RemediationAI

Within 30 days: Identify affected systems running the apps and endpoints configuration in PowerShell Universal and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

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CVE-2026-3563 vulnerability details – vuln.today

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