CVE-2025-66032 HIGH

CVE-2025-66032: Claude Code Command Validation Bypass Allows Arbitrary Code Execution

Vendor Anthropics
Product claude-code
Weakness CWE-77
Published December 3, 2025
Last update December 3, 2025
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction —
Confidentiality —
Integrity —

CVSS vector

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

What the vulnerability does

01Description

Claude Code is an agentic coding tool. Prior to 1.0.93, Due to errors in parsing shell commands related to $IFS and short CLI flags, it was possible to bypass the Claude Code read-only validation and trigger arbitrary code execution. Reliably exploiting this requires the ability to add untrusted content into a Claude Code context window. This vulnerability is fixed in 1.0.93.

Key dates

02Disclosure timeline

December 3, 2025 CVE published
December 3, 2025 Record updated