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.
Metrics
Affected Vendors & Products
References
History
Tue, 07 Apr 2026 08:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | DLL Search-Order Hijacking in Anthropic Claude Windows Installer Enables Local Privilege Escalation | |
| Weaknesses | CWE-779 |
Mon, 06 Apr 2026 18:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Anthropic claude
Microsoft Microsoft windows |
|
| Weaknesses | CWE-427 | |
| CPEs | cpe:2.3:a:anthropic:claude:*:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* |
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| Vendors & Products |
Anthropic claude
Microsoft Microsoft windows |
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| Metrics |
cvssV3_1
|
Wed, 01 Apr 2026 02:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | DLL Search-Order Hijacking in Anthropic Claude Windows Installer Enables Local Privilege Escalation | |
| First Time appeared |
Anthropic
Anthropic claude Desktop |
|
| Weaknesses | CWE-779 | |
| Vendors & Products |
Anthropic
Anthropic claude Desktop |
Tue, 31 Mar 2026 17:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Tue, 31 Mar 2026 16:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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 |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: hackerone
Published: 2026-03-31T15:30:38.876Z
Updated: 2026-03-31T18:13:52.328Z
Reserved: 2026-01-07T15:39:03.440Z
Link: CVE-2026-22561
Updated: 2026-03-31T16:31:29.129Z
Status : Analyzed
Published: 2026-03-31T16:16:28.850
Modified: 2026-04-06T16:58:22.433
Link: CVE-2026-22561
No data.
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