CVE-2026-35603— Claude Code: Insecure System-Wide Configuration Loading Enables Local Privilege Escalation on Windows
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I. Basic Information for CVE-2026-35603
Vulnerability Information
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Vulnerability Title
Claude Code: Insecure System-Wide Configuration Loading Enables Local Privilege Escalation on Windows
Source: NVD (National Vulnerability Database)
Vulnerability Description
Claude Code is an agentic coding tool. In versions prior to 2.1.75 on Windows, Claude Code loaded the system-wide default configuration from C:\ProgramData\ClaudeCode\managed-settings.json without validating directory ownership or access permissions. Because the ProgramData directory is writable by non-administrative users by default and the ClaudeCode subdirectory was not pre-created or access-restricted, a low-privileged local user could create this directory and place a malicious configuration file that would be automatically loaded for any user launching Claude Code on the same machine. Exploiting this would have required a shared multi-user Windows system and a victim user to launch Claude Code after the malicious configuration was placed. This issue has been fixed on version 2.1.75.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
不可信的搜索路径
Source: NVD (National Vulnerability Database)
Vulnerability Title
Claude Code 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Claude Code是Anthropic开源的一个终端原生AI编程工具。 Claude Code 2.1.75之前版本存在安全漏洞，该漏洞源于加载系统范围默认配置时未验证目录所有权或访问权限，可能导致低权限本地用户加载恶意配置文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| anthropics | claude-code | < 2.1.75 | - |
II. Public POCs for CVE-2026-35603
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|---|
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IV. Related Vulnerabilities
Same product: claude-code
- CVE-2026-40068
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Claude Code: Sandbox Escape via Symlink Following Allows Arb - CVE-2026-33068
Claude Code has a Workspace Trust Dialog Bypass via Repo-Con - CVE-2026-25725
Claude Code Has Sandbox Escape via Persistent Configuration - CVE-2026-25724
Claude Code Has Permission Deny Bypass Through Symbolic Link
Same vendor: anthropics
- CVE-2026-40068
Claude Code arbitrary code execution via git worktree common - CVE-2026-41686
Claude SDK for TypeScript has Insecure Default File Permissi - CVE-2026-39861
Claude Code: Sandbox Escape via Symlink Following Allows Arb - CVE-2026-34451
Claude SDK for TypeScript: Memory Tool Path Validation Allow - CVE-2026-34450
Claude SDK for Python: Insecure Default File Permissions in
Same weakness: CWE-426
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OpenTelemetry-Go has an incomplete fix for CVE-2026-24051: B
V. Comments for CVE-2026-35603
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