{"cve":"CVE-2026-35603","nvd":{"published":"2026-04-17T21:16:33.507","modified":"2026-10-26T22:10:00.163","status":"Analyzed","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.","cvss_v4":{"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":5.4},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","score":7.3},"cwes":["CWE-426"],"references":["https://github.com/anthropics/claude-code/security/advisories/GHSA-5cwg-9f6j-9jvx"],"products":["anthropic:claude_code"],"source":"nvd","synced_at":"2026-10-26T22:26:44.656832877+00:00"},"epss":{"cve":"CVE-2026-35603","score":0.00108,"percentile":0.01171,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-5cwg-9f6j-9jvx","url":"https://osv.dev/vulnerability/GHSA-5cwg-9f6j-9jvx","summary":"Claude Code: Insecure System-Wide Configuration Loading Enables Local Privilege Escalation on Windows","modified":"2026-05-05T16:04:01.752628Z","packages":[{"ecosystem":"npm","name":"@anthropic-ai/claude-code","purl":"pkg:npm/%40anthropic-ai/claude-code","ranges":["<2.1.75"],"fixed":["2.1.75"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}