{"schema":"threatline.record/2","record":{"id":"CVE-2021-22017","aliases":[],"summary":"VMware vCenter Server Improper Access Control","details":"Rhttproxy as used in vCenter Server contains a vulnerability due to improper implementation of URI normalization.","categories":["Containers & cloud"],"product":"vCenter Server","vendor":"VMware","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-22017","source_modified_at":"2025-10-21T23:25:31.570Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"VMware vCenter Server, VMware Cloud Foundation","vendor":"n/a","versions":[{"status":"affected","version":"VMware vCenter Server(6.7 before 6.7 U3o and 6.5 before 6.5 U3q) and VMware Cloud Foundation 3.x before 3.10.2.2"}],"defaultStatus":null}],"fixed_versions":[],"cvss":5.3,"severity":"Medium","kev":{"listed":true,"date_added":"2022-01-10","due_date":"2022-01-24","required_action":"Apply updates per vendor instructions.","ransomware_campaign_use":"Unknown"},"epss":{"probability":0.49177,"percentile":0.98884,"score_date":"2026-10-23"},"published_at":"2021-09-23T12:13:01.000Z","modified_at":"2025-10-21T23:25:31.570Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2021-22017","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2025-10-21T23:25:31.570Z"},{"source":"Nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-22017.yaml","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":null},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2021-22017","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","Nuclei","EPSS"],"references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-22017","source":"CISA KEV"},{"source":"CVE List","url":"https://www.vmware.com/security/advisories/VMSA-2021-0020.html","tags":["x_refsource_MISC","x_transferred"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22017","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CISA ADP","ssvc":{"exploitation":"active","automatable":"yes","technical_impact":"partial","assessed_at":"2025-01-29T17:54:48.927818Z"},"exploits":[{"source":"Nuclei","kind":"Scanner template","name":"vCenter Server - Improper Access Control","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-22017.yaml"}],"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2025-10-21T23:25:31.570Z","content_hash":"3355bc61c8fcd5b69919642b9c872df7b0bb50d9bae6670eaaa24fd33a6e4d78"}}