Vulnerability · Published Mar 31, 2026 · Assigned by hackerone
CVE-2026-22561
Medium 4.7
In plain English
A medium-severity uncontrolled search path in Claude Desktop - Windows from Anthropic. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Anthropic | Claude Desktop - Windows | 0 – before 1.1.3363 |
Weakness: CWE-427 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H