Uncontrolled search path elements in Anthropic Claude for Windows installer (Claude Setup.exe) versions prior to 1.1.3363 allow local privilege escalation via DLL search-order hijacking. The installer loads DLLs (e.g., profapi.dll) from its own directory after UAC elevation, enabling arbitrary code execution if a malicious DLL is planted alongside the installer.
History

Tue, 31 Mar 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 31 Mar 2026 16:00:00 +0000

Type Values Removed Values Added
Description Uncontrolled search path elements in Anthropic Claude for Windows installer (Claude Setup.exe) versions prior to 1.1.3363 allow local privilege escalation via DLL search-order hijacking. The installer loads DLLs (e.g., profapi.dll) from its own directory after UAC elevation, enabling arbitrary code execution if a malicious DLL is planted alongside the installer.
References
Metrics cvssV4_0

{'score': 4.7, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2026-03-31T16:33:12.314Z

Reserved: 2026-01-07T15:39:03.440Z

Link: CVE-2026-22561

cve-icon Vulnrichment

Updated: 2026-03-31T16:31:29.129Z

cve-icon NVD

Status : Received

Published: 2026-03-31T16:16:28.850

Modified: 2026-03-31T16:16:28.850

Link: CVE-2026-22561

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.