CVE-2026-22561 in Anthropic Claude Desktopinfo

Summary

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.

Responsible

hackerone

Reservation

01/07/2026

Disclosure

03/31/2026

Entries

VulDB provides additional information and datapoints for this CVE:

ID	Vulnerability	CWE	Exp	Cou	CVE
354439	Anthropic Claude Desktop Setup.exe uncontrolled search path	427	Not defined	Official fix	CVE-2026-22561

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