CVE-2026-16812

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-16812", "assignerOrgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7", "state": "PUBLISHED", "assignerShortName": "Arista", "dateReserved": "2026-07-23T21:46:32.558Z", "datePublished": "2026-07-27T16:11:00.968Z", "dateUpdated": "2026-07-28T03:56:40.567Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7", "shortName": "Arista", "dateUpdated": "2026-07-27T16:11:00.968Z"}, "title": "VeloCloud Orchestrator OS Command Injection", "datePublic": "2026-07-27T16:07:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-78", "description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-88", "descriptions": [{"lang": "en", "value": "CAPEC-88: OS Command Injection"}]}], "affected": [{"vendor": "Arista Networks", "product": "VeloCloud Orchestrator On-Prem", "versions": [{"status": "affected", "version": "5.2.0", "lessThan": "5.2.3.14", "versionType": "custom"}, {"status": "affected", "version": "6.1.0", "lessThan": "6.1.3.4", "versionType": "custom"}, {"status": "affected", "version": "6.4.0", "lessThan": "6.4.2.4", "versionType": "custom"}, {"status": "affected", "version": "7.0.0", "lessThan": "7.0.0.1", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "VeloCloud Orchestrator (VCO) on-prem has a security issue where this issue may allow a remote attacker to access privileged internal functionality and impact the VCO host. Successful exploitation may compromise the confidentiality, integrity, and availability of the orchestrator and data managed by the orchestrator.\n\n\n\n\nThis functionality was intended to be for internal use only and is not intended to be remotely accessible.\n\n\n\n\nHosted and Dedicated versions of VCO have already been patched in advance of this notice going out.\n\n\n\n\nThis issue was discovered externally and is known to be actively exploited.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>VeloCloud Orchestrator (VCO) on-prem has a security issue where this issue may allow a remote attacker to access privileged internal functionality and impact the VCO host. 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VCO tenant or operator credentials are not required for this exposure.\n\n\n\n\nDeployments that restrict VCO web interface access to trusted administrative networks can reduce risk of exposure.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>VCO is exposed by default. There is no configuration that can prevent the exposure. A successful attack requires network access to the VCO web interface. VCO tenant or operator credentials are not required for this exposure.</p>\n<p>Deployments that restrict VCO web interface access to trusted administrative networks can reduce risk of exposure.</p>"}]}], "workarounds": [{"lang": "en", "value": "The recommended resolution is to upgrade to a fixed VCO release as soon as it is available. 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For VCOs which are not on a supported release train, customers can contact TAC to discuss possible upgrade options for your release.</p>\n<p>Until the fixed software is deployed, operators should apply defense-in-depth controls appropriate for their environment:</p>\n<ul>\n<li>Restrict access to the VCO web interface to trusted administrative networks.</li>\n<li>Monitor the VCO for accesses from known malicious source IPs.</li>\n<li>Monitor for unexpected outbound network activity from the VCO host.</li>\n<li>Review recent administrator activity for unexpected changes.</li>\n</ul>"}]}], "solutions": [{"lang": "en", "value": "The recommended resolution is to upgrade to a fixed VCO release at your earliest convenience.\n\nThis vulnerability has been fixed in the following releases:\n\n\u00a0\n\n * VCO\u00a05.2.3.14\u00a0and later in the 5.2 train\n * VCO\u00a06.1.3.4\u00a0and later in the 6.1 train\n * VCO\u00a06.4.2.4\u00a0and later in the 6.4 train", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>The recommended resolution is to upgrade to a fixed VCO release at your earliest convenience.</p><div>This vulnerability has been fixed in the following releases:</div><div>&nbsp;</div><ul><li>VCO&nbsp;<b>5.2.3.14</b>&nbsp;and later in the 5.2 train</li><li>VCO&nbsp;<b>6.1.3.4</b>&nbsp;and later in the 6.1 train</li><li>VCO&nbsp;<b>6.4.2.4</b>&nbsp;and later in the 6.4 train</li></ul>"}]}], "source": {"defect": ["BUG 1901675"], "advisory": "144", "discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.4"}, "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "CRITICAL", "baseScore": 10, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "exploitMaturity": "NOT_DEFINED", "Safety": "PRESENT", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "CRITICAL", "baseScore": 10, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/S:P"}}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-27T00:00:00+00:00", "options": [{"Exploitation": "active"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-16812"}}}, {"other": {"type": "kev", "content": {"dateAdded": "2026-07-27", "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-16812"}}}], "references": [{"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-16812", "tags": ["government-resource"]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-28T03:56:40.567Z"}, "timeline": [{"time": "2026-07-27T00:00:00.000Z", "lang": "en", "value": "CVE-2026-16812 added to CISA KEV"}]}]}}

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Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. 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Successful exploitation may compromise the confidentiality, integrity, and availability of the orchestrator and data managed by the orchestrator.\n\n\n\n\nThis functionality was intended to be for internal use only and is not intended to be remotely accessible.\n\n\n\n\nHosted and Dedicated versions of VCO have already been patched in advance of this notice going out.\n\n\n\n\nThis issue was discovered externally and is known to be actively exploited."}, {"lang": "es", "value": "VeloCloud Orchestrator (VCO) local tiene un problema de seguridad donde este problema puede permitir a un atacante remoto acceder a funcionalidades internas privilegiadas e impactar al host de VCO. La explotaci\u00f3n exitosa puede comprometer la confidencialidad, integridad y disponibilidad del orquestador y los datos gestionados por el orquestador.\n\nEsta funcionalidad estaba destinada a ser solo para uso interno y no est\u00e1 destinada a ser accesible de forma remota.\n\nLas versiones Hosted y Dedicated de VCO ya han sido parcheadas antes de la publicaci\u00f3n de este aviso.\n\nEste problema fue descubierto externamente y se sabe que est\u00e1 siendo explotado activamente."}], "id": "CVE-2026-16812", "lastModified": "2026-10-24T13:10:00.147", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 10.0, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 6.0, "source": "psirt@arista.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "PRESENT", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 10.0, "baseSeverity": "CRITICAL", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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:P/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "psirt@arista.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-16812", "options": [{"exploitation": "active"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-07-27T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-07-27T16:17:03.640", "references": [{"source": "psirt@arista.com", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://www.arista.com/en/support/advisories-notices/security-advisory/24364-security-advisory-0144"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["US Government Resource"], "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-16812"}], "sourceIdentifier": "psirt@arista.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "psirt@arista.com", "type": "Secondary"}]}

{}

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