CVE-2026-22561

N/A

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.

CVE Details

CVSS v3.1 ScoreN/A

Published3/31/2026

Last Modified4/1/2026

Sourcenvd

Honeypot Sightings0

References

https://trust.anthropic.com/resources?s=1cvig6ldp3zvuj1yffzr11&name=cve-2026-22561-dll-search-order-hijacking-in-claude-for-windows-installer(support@hackerone.com)

IOC Correlations

No correlations recorded

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