CVE-2026-22561

HIGH

Anthropic Claude Desktop - Windows < 1.1.3363 - Privilege Escalation

Title source: rule
STIX 2.1

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 (1)

Scores

CVSS v3 7.8
EPSS 0.0001
EPSS Percentile 1.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-427
Status published
Products (3)
anthropic/claude < 1.1.3363
Anthropic/Claude Desktop - Windows < 1.1.3363
Anthropic/Claude Desktop - Windows 1.1.3363
Published Mar 31, 2026
Tracked Since Mar 31, 2026