CVE-2025-64755 HIGH

CVE-2025-64755: @anthropic-ai/claude-code has Sed Command Validation Bypass that Allows Arbitrary File Writes

Vendor Anthropics
Product claude-code
Weakness CWE-78
Published November 21, 2025
Last update November 24, 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 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.

Key dates

02Disclosure timeline

November 21, 2025 CVE published
November 24, 2025 Record updated