{"history":[{"alert":0,"cve":"CVE-2021-22017","id":22136,"kind":"epss","observed_at":1794500401,"payload":"{\"date\": \"2026-11-12\", \"epss\": 0.49177, \"percentile\": 0.98902}"},{"alert":0,"cve":"CVE-2021-22017","id":19755,"kind":"epss","observed_at":1794327601,"payload":"{\"date\": \"2026-11-10\", \"epss\": 0.49177, \"percentile\": 0.98895}"},{"alert":0,"cve":"CVE-2021-22017","id":17721,"kind":"epss","observed_at":1794241201,"payload":"{\"date\": \"2026-11-09\", \"epss\": 0.49177, \"percentile\": 0.98893}"},{"alert":0,"cve":"CVE-2021-22017","id":15785,"kind":"epss","observed_at":1794154800,"payload":"{\"date\": \"2026-11-08\", \"epss\": 0.49177, \"percentile\": 0.98892}"},{"alert":0,"cve":"CVE-2021-22017","id":13763,"kind":"epss","observed_at":1794068402,"payload":"{\"date\": \"2026-11-07\", \"epss\": 0.49177, \"percentile\": 0.98892}"},{"alert":0,"cve":"CVE-2021-22017","id":11545,"kind":"epss","observed_at":1793982001,"payload":"{\"date\": \"2026-11-06\", \"epss\": 0.49177, \"percentile\": 0.98891}"},{"alert":0,"cve":"CVE-2021-22017","id":9531,"kind":"epss","observed_at":1793938800,"payload":"{\"date\": \"2026-11-05\", \"epss\": 0.49177, \"percentile\": 0.98889}"},{"alert":1,"cve":"CVE-2021-22017","id":9267,"kind":"cna","observed_at":1793917201,"payload":"{\"containers\": {\"adp\": [{\"providerMetadata\": {\"dateUpdated\": \"2024-08-03T18:30:23.942Z\", \"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\"}, \"references\": [{\"tags\": [\"x_refsource_MISC\", \"x_transferred\"], \"url\": \"https://www.vmware.com/security/advisories/VMSA-2021-0020.html\"}], \"title\": \"CVE Program Container\"}, {\"metrics\": [{\"cvssV3_1\": {\"attackComplexity\": \"LOW\", \"attackVector\": \"NETWORK\", \"availabilityImpact\": \"NONE\", \"baseScore\": 5.3, \"baseSeverity\": \"MEDIUM\", \"confidentialityImpact\": \"LOW\", \"integrityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"scope\": \"UNCHANGED\", \"userInteraction\": \"NONE\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\", \"version\": \"3.1\"}}, {\"other\": {\"content\": {\"id\": \"CVE-2021-22017\", \"options\": [{\"Exploitation\": \"active\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"role\": \"CISA Coordinator\", \"timestamp\": \"2025-01-29T17:54:48.927818Z\", \"version\": \"2.0.3\"}, \"type\": \"ssvc\"}}, {\"other\": {\"content\": {\"dateAdded\": \"2022-01-10\", \"reference\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22017\"}, \"type\": \"kev\"}}], \"problemTypes\": [{\"descriptions\": [{\"description\": \"CWE-noinfo Not enough information\", \"lang\": \"en\", \"type\": \"CWE\"}]}], \"providerMetadata\": {\"dateUpdated\": \"2025-10-21T23:25:31.570Z\", \"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\"}, \"references\": [{\"tags\": [\"government-resource\"], \"url\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22017\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2022-01-10T00:00:00.000Z\", \"value\": \"CVE-2021-22017 added to CISA KEV\"}], \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"affected\": [{\"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\"}]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Rhttproxy as used in vCenter Server contains a vulnerability due to improper implementation of URI normalization. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to bypass proxy leading to internal endpoints being accessed.\"}], \"problemTypes\": [{\"descriptions\": [{\"description\": \"Rhttpproxy bypass vulnerability\", \"lang\": \"en\", \"type\": \"text\"}]}], \"providerMetadata\": {\"dateUpdated\": \"2021-09-23T12:13:01.000Z\", \"orgId\": \"dcf2e128-44bd-42ed-91e8-88f912c1401d\", \"shortName\": \"vmware\"}, \"references\": [{\"tags\": [\"x_refsource_MISC\"], \"url\": \"https://www.vmware.com/security/advisories/VMSA-2021-0020.html\"}], \"x_legacyV4Record\": {\"CVE_data_meta\": {\"ASSIGNER\": \"security@vmware.com\", \"ID\": \"CVE-2021-22017\", \"STATE\": \"PUBLIC\"}, \"affects\": {\"vendor\": {\"vendor_data\": [{\"product\": {\"product_data\": [{\"product_name\": \"VMware vCenter Server, VMware Cloud Foundation\", \"version\": {\"version_data\": [{\"version_value\": \"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\"}]}}]}, \"vendor_name\": \"n/a\"}]}}, \"data_format\": \"MITRE\", \"data_type\": \"CVE\", \"data_version\": \"4.0\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"Rhttproxy as used in vCenter Server contains a vulnerability due to improper implementation of URI normalization. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to bypass proxy leading to internal endpoints being accessed.\"}]}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"Rhttpproxy bypass vulnerability\"}]}]}, \"references\": {\"reference_data\": [{\"name\": \"https://www.vmware.com/security/advisories/VMSA-2021-0020.html\", \"refsource\": \"MISC\", \"url\": \"https://www.vmware.com/security/advisories/VMSA-2021-0020.html\"}]}}}}, \"cveMetadata\": {\"assignerOrgId\": \"dcf2e128-44bd-42ed-91e8-88f912c1401d\", \"assignerShortName\": \"vmware\", \"cveId\": \"CVE-2021-22017\", \"datePublished\": \"2021-09-23T12:13:01.000Z\", \"dateReserved\": \"2021-01-04T00:00:00.000Z\", \"dateUpdated\": \"2025-10-21T23:25:31.570Z\", \"state\": \"PUBLISHED\"}, \"dataType\": \"CVE_RECORD\", \"dataVersion\": \"5.1\"}"},{"alert":0,"cve":"CVE-2021-22017","id":7079,"kind":"epss","observed_at":1793809200,"payload":"{\"date\": \"2026-11-04\", \"epss\": 0.49177, \"percentile\": 0.98889}"},{"alert":0,"cve":"CVE-2021-22017","id":4856,"kind":"epss","observed_at":1793722800,"payload":"{\"date\": \"2026-11-03\", \"epss\": 0.49177, \"percentile\": 0.98887}"},{"alert":0,"cve":"CVE-2021-22017","id":2638,"kind":"epss","observed_at":1793665375,"payload":"{\"date\": \"2026-11-02\", \"epss\": 0.49177, \"percentile\": 0.98885}"},{"alert":1,"cve":"CVE-2021-22017","id":1441,"kind":"kev","observed_at":1793665375,"payload":"{\"cveID\": \"CVE-2021-22017\", \"cwes\": [\"CWE-23\"], \"dateAdded\": \"2022-01-10\", \"dueDate\": \"2022-01-24\", \"forensicTriage\": \"No\", \"knownRansomwareCampaignUse\": \"Unknown\", \"notes\": \"https://nvd.nist.gov/vuln/detail/CVE-2021-22017\", \"product\": \"vCenter Server\", \"requiredAction\": \"Apply updates per vendor instructions.\", \"shortDescription\": \"Rhttproxy as used in vCenter Server contains a vulnerability due to improper implementation of URI normalization.\", \"vendorProject\": \"VMware\", \"vulnerabilityName\": \"VMware vCenter Server Improper Access Control\"}"}],"record":{"affected":[{"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"}]}],"cna":{"containers":{"adp":[{"providerMetadata":{"dateUpdated":"2024-08-03T18:30:23.942Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"tags":["x_refsource_MISC","x_transferred"],"url":"https://www.vmware.com/security/advisories/VMSA-2021-0020.html"}],"title":"CVE Program Container"},{"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}},{"other":{"content":{"id":"CVE-2021-22017","options":[{"Exploitation":"active"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2025-01-29T17:54:48.927818Z","version":"2.0.3"},"type":"ssvc"}},{"other":{"content":{"dateAdded":"2022-01-10","reference":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22017"},"type":"kev"}}],"problemTypes":[{"descriptions":[{"description":"CWE-noinfo Not enough information","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2025-10-21T23:25:31.570Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"references":[{"tags":["government-resource"],"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22017"}],"timeline":[{"lang":"en","time":"2022-01-10T00:00:00.000Z","value":"CVE-2021-22017 added to CISA KEV"}],"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"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"}]}],"descriptions":[{"lang":"en","value":"Rhttproxy as used in vCenter Server contains a vulnerability due to improper implementation of URI normalization. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to bypass proxy leading to internal endpoints being accessed."}],"problemTypes":[{"descriptions":[{"description":"Rhttpproxy bypass vulnerability","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2021-09-23T12:13:01.000Z","orgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","shortName":"vmware"},"references":[{"tags":["x_refsource_MISC"],"url":"https://www.vmware.com/security/advisories/VMSA-2021-0020.html"}],"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"security@vmware.com","ID":"CVE-2021-22017","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"VMware vCenter Server, VMware Cloud Foundation","version":{"version_data":[{"version_value":"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"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Rhttproxy as used in vCenter Server contains a vulnerability due to improper implementation of URI normalization. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to bypass proxy leading to internal endpoints being accessed."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Rhttpproxy bypass vulnerability"}]}]},"references":{"reference_data":[{"name":"https://www.vmware.com/security/advisories/VMSA-2021-0020.html","refsource":"MISC","url":"https://www.vmware.com/security/advisories/VMSA-2021-0020.html"}]}}}},"cveMetadata":{"assignerOrgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","assignerShortName":"vmware","cveId":"CVE-2021-22017","datePublished":"2021-09-23T12:13:01.000Z","dateReserved":"2021-01-04T00:00:00.000Z","dateUpdated":"2025-10-21T23:25:31.570Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"},"cna_checked":1794370801,"cve":"CVE-2021-22017","description":"Rhttproxy as used in vCenter Server contains a vulnerability due to improper implementation of URI normalization. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to bypass proxy leading to internal endpoints being accessed.","epss":{"date":"2026-11-12","epss":0.49177,"percentile":0.98902},"epss_checked":1794522003,"first_seen":1793665375,"kev":{"cveID":"CVE-2021-22017","cwes":["CWE-23"],"dateAdded":"2022-01-10","dueDate":"2022-01-24","forensicTriage":"No","knownRansomwareCampaignUse":"Unknown","notes":"https://nvd.nist.gov/vuln/detail/CVE-2021-22017","product":"vCenter Server","requiredAction":"Apply updates per vendor instructions.","shortDescription":"Rhttproxy as used in vCenter Server contains a vulnerability due to improper implementation of URI normalization.","vendorProject":"VMware","vulnerabilityName":"VMware vCenter Server Improper Access Control"},"kev_checked":1794522003,"products":"n/a VMware vCenter Server, VMware Cloud Foundation","references":["https://www.vmware.com/security/advisories/VMSA-2021-0020.html","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22017"],"score":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","provider":"CISA-ADP","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"solutions":"","state":"PUBLISHED","title":"VMware vCenter Server Improper Access Control","updated_at":1794500401,"workarounds":""},"sources":[]}