How to fix CVE-2025-64755?

Within 30 days: Identify all affected systems and apply vendor patches as part of regular patch cycle. Validate that input sanitization is in place for all user-controlled parameters.

Is Command Injection affected by CVE-2025-64755?

Organizations using Claude Code face significant risk from CVE-2025-64755, a OS command injection vulnerability rated CVSS 8.7. Successful exploitation could allow attackers to execute arbitrary code or commands on affected systems, potentially leading to full system compromise.

CVE-2025-64755

HIGH

2025-11-21 [email protected]

8.7

CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Scope

Lifecycle Timeline

Patch Released

Mar 31, 2026 - 21:13 nvd

Patch available

Analysis Generated

Mar 28, 2026 - 19:23 vuln.today

CVE Published

Nov 21, 2025 - 02:15 nvd

HIGH 8.7

Description

Claude Code is an agentic coding tool. Prior to version 2.0.31, due to an error in sed command parsing, it was possible to bypass the Claude Code read-only validation and write to arbitrary files on the host system. This issue has been patched in version 2.0.31.

Analysis

Claude Code is an agentic coding tool. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical Context

This vulnerability is classified as OS Command Injection (CWE-78), which allows attackers to execute arbitrary operating system commands on the host. Claude Code is an agentic coding tool. Prior to version 2.0.31, due to an error in sed command parsing, it was possible to bypass the Claude Code read-only validation and write to arbitrary files on the host system. This issue has been patched in version 2.0.31. Affected products include: Anthropic Claude Code. Version information: version 2.0.31.

Affected Products

Anthropic Claude Code.

Remediation

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Avoid passing user input to shell commands. Use language-specific APIs instead of shell execution. Apply strict input validation with allowlists.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.1

CVSS: +44

POC: 0

CVE-2025-64755 vulnerability details – vuln.today

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CVE-2025-64755

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CVE-2025-64755

CVSS Vector

Lifecycle Timeline

Tags

Description

Analysis

Technical Context

Affected Products

Remediation

Priority Score

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External POC / Exploit Code