What is CVE-2025-64755?

CVE-2025-64755 is a critical-severity vulnerability in Anthropic Claude_code, classified under OS Command Injection. CVSS score: 9.8/10. Published 2025-11-21.

How severe is CVE-2025-64755?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Anthropic Claude_code

CVE-2025-64755

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 pat…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.004 (36.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Anthropic Claude_code
Anthropics Claude-code — versions < 2.0.31

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2025-64755?: CVE-2025-64755 is a critical-severity vulnerability in Anthropic Claude_code, classified under OS Command Injection. CVSS score: 9.8/10. Published 2025-11-21.
How severe is CVE-2025-64755?: Critical severity. CVSS v3 base score is 9.8 out of 10.