PT-2026-29282 · Anthropic · Claude Desktop - Windows+1

Published 2026-03-31 · Updated 2026-03-31 · CVE-2026-22561

NVD

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

Fix

Uncontrolled Search Path Element

Weakness Enumeration

CWE-427

Related Identifiers

CVE-2026-22561

Affected Products

Claude Desktop - Windows

Claude

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-22561 · Security Note
• https://trust.anthropic.com/resources?s=1cvig6ldp3zvuj1yffzr11&name=cve-2026-22561-dll-search-order-hijacking-in-claude-for-windows-installer · Vendor Advisory