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

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

Mitre

CVSS v4.0

4.7

Medium

AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA: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

Related Identifiers

CVE-2026-22561

Affected Products

Claude Desktop - Windows

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 · Note