CVE-2026-22561

| EUVD-2026-17476 MEDIUM
2026-03-31 hackerone GHSA-3c2p-6j48-gmm4
4.7
CVSS 4.0
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CVSS 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
P
Scope
X

Lifecycle Timeline

3
Analysis Generated
Mar 31, 2026 - 16:00 vuln.today
EUVD ID Assigned
Mar 31, 2026 - 16:00 euvd
EUVD-2026-17476
CVE Published
Mar 31, 2026 - 15:30 nvd
MEDIUM 4.7

Tags

Privilege Escalation RCE Microsoft

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.

Analysis

DLL search-order hijacking in Anthropic Claude for Windows installer (Claude Setup.exe) versions before 1.1.3363 enables local privilege escalation to system context. An attacker with low privileges and physical or local access can plant a malicious DLL (such as profapi.dll) in the installer directory; when an elevated user runs the installer, the uncontrolled search path causes the malicious DLL to be loaded and executed with system privileges, achieving arbitrary code execution. …

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Priority Score

24
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +24
POC: 0

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CVE-2026-22561 vulnerability details – vuln.today
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