{"id":"CVE-2026-35603","revision":null,"records":[{"revision":"121e57754e8b47be8604c64d5fddf848","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-35603","aliases":[],"title":"Claude Code: Insecure System-Wide Configuration Loading Enables Local Privilege Escalation on Windows","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.","state":0,"publishedAt":"2026-04-17T20:38:49.901+00:00","modifiedAt":"2026-04-20T14:57:47.669+00:00","affected":[{"ecosystem":"Vendor product","name":"claude-code","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"anthropics\",\n                    \"product\": \"claude-code\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2.1.75\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","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,"severity":"MEDIUM"}],"references":["https://github.com/anthropics/claude-code/security/advisories/GHSA-5cwg-9f6j-9jvx"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-35603","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-35603","identifiers":["CVE-2026-35603"]},"retained":false,"historicalAffected":[]},{"revision":"552a04b425b34ecf858d4b3e877edb4d","observedAt":"2026-11-01T06:11:11.208+00:00","statement":{"source":"euvd","id":"EUVD-2026-23520","aliases":["CVE-2026-35603","GHSA-5cwg-9f6j-9jvx"],"title":"Claude Code is an agentic coding tool. 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This issue has been fixed on version 2.1.75.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","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,"severity":null}],"references":["https://github.com/anthropics/claude-code/security/advisories/GHSA-5cwg-9f6j-9jvx"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-23520","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Apr 17, 2026, 8:38:49 PM","dateUpdated":"Apr 20, 2026, 2:57:47 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. 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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.","state":0,"publishedAt":"2026-04-17T21:16:33.507+00:00","modifiedAt":"2026-10-26T22:10:00.163+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","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/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","score":5.4,"severity":"MEDIUM"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","score":7.3,"severity":"HIGH"}],"references":["https://github.com/anthropics/claude-code/security/advisories/GHSA-5cwg-9f6j-9jvx"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-35603","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-426"],"productCriteria":["cpe:2.3:a:anthropic:claude_code:*:*:*:*:*:node.js:*:*","cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-04-17T21:16:33.507","lastModified":"2026-10-26T22:10:00.163"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-35603","identifiers":["CVE-2026-35603"]},"retained":false,"historicalAffected":[]},{"revision":"d218459518f64892acf412803bdba0b3","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-5cwg-9f6j-9jvx","aliases":["CVE-2026-35603"],"title":"Claude Code: Insecure System-Wide Configuration Loading Enables Local Privilege Escalation on Windows","description":"On Windows, Claude Code loaded 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.\n\nUsers on standard Claude Code auto-update have received this fix already. Users performing manual updates are advised to update to the latest version.\n\nThank you to hackerone.com/edbr for reporting this issue.","state":0,"publishedAt":"2026-04-17T22:19:38+00:00","modifiedAt":"2026-05-05T16:04:01.752628+00:00","affected":[{"ecosystem":"npm","name":"@anthropic-ai/claude-code","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"2.1.75"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","score":null,"severity":null},{"system":"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":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/anthropics/claude-code/security/advisories/GHSA-5cwg-9f6j-9jvx","https://nvd.nist.gov/vuln/detail/CVE-2026-35603","https://github.com/anthropics/claude-code"],"sourceUrl":"https://github.com/advisories/GHSA-5cwg-9f6j-9jvx","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-5cwg-9f6j-9jvx","identifiers":["GHSA-5cwg-9f6j-9jvx","CVE-2026-35603"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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