{"cve":{"cve_id":"CVE-2026-16812","is_kev":true,"kev_date_added":"2026-07-27","kev_vendor_project":"Arista","kev_product":"VeloCloud Orchestrator","kev_vulnerability_name":"Arista VeloCloud Orchestrator On-Prem OS Command Injection Vulnerability","kev_short_description":"Arista VeloCloud Orchestrator On-Prem contains an OS command injection vulnerability that 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.","kev_required_action":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","kev_due_date":"2026-07-30","kev_known_ransomware":false,"kev_notes":"https://www.arista.com/en/support/advisories-notices/security-advisory/24364-security-advisory-0144 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-16812","kev_cwes":["CWE-78"],"epss_score":0.01568,"epss_percentile":0.73493,"epss_as_of":"2026-08-26","description":"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.","published_at":"2026-07-27T16:11:00.968000Z","last_modified_at":"2026-07-28T14:50:33.960000Z","cvss_v3_score":10.0,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","cvss_v3_severity":"CRITICAL","cvss_v4_score":10.0,"cvss_v4_vector":"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","cvss_v4_severity":"CRITICAL","ssvc_decision":null,"ssvc_exploitation":"active","ssvc_automatable":true,"ssvc_technical_impact":"total","cwes":["CWE-78"],"nvd_references":["https://www.arista.com/en/support/advisories-notices/security-advisory/24364-security-advisory-0144"],"vuln_status":"Analyzed","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-07-27T19:04:23.263756Z","updated_at":"2026-07-30T19:04:16.726297Z"},"effective_severity":"CRITICAL","badges":["kev","news"],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"C","value_label":"Changed"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"AT","name":"Attack Requirements","value":"N","value_label":"None"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"VC","name":"Confidentiality (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VI","name":"Integrity (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VA","name":"Availability (Vulnerable System)","value":"H","value_label":"High"},{"metric":"SC","name":"Confidentiality (Subsequent System)","value":"H","value_label":"High"},{"metric":"SI","name":"Integrity (Subsequent System)","value":"H","value_label":"High"},{"metric":"SA","name":"Availability (Subsequent System)","value":"H","value_label":"High"},{"metric":"S","name":"Scope","value":"P","value_label":"Physical"}]},"affected":[{"vendor_slug":"arista","vendor_name":"Arista","product_slug":"velocloud-orchestrator","product_name":"velocloud_orchestrator","version_start":"5.2.0","version_start_inclusive":true,"version_end":"5.2.3.14","version_end_inclusive":false,"cpe23_uri":"cpe:2.3:a:arista:velocloud_orchestrator:*:*:*:*:*:*:*:*"},{"vendor_slug":"arista","vendor_name":"Arista","product_slug":"velocloud-orchestrator","product_name":"velocloud_orchestrator","version_start":"7.0.0","version_start_inclusive":true,"version_end":"7.0.0","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:arista:velocloud_orchestrator:7.0.0:*:*:*:*:*:*:*"},{"vendor_slug":"arista-networks","vendor_name":"Arista Networks","product_slug":"velocloud-orchestrator-on-prem","product_name":"VeloCloud Orchestrator On-Prem","version_start":"5.2.0","version_start_inclusive":true,"version_end":"5.2.3.14","version_end_inclusive":false,"cpe23_uri":"cve5:arista-networks:velocloud-orchestrator-on-prem:5.2.0:5.2.3.14"},{"vendor_slug":"arista-networks","vendor_name":"Arista Networks","product_slug":"velocloud-orchestrator-on-prem","product_name":"VeloCloud Orchestrator On-Prem","version_start":"6.1.0","version_start_inclusive":true,"version_end":"6.1.3.4","version_end_inclusive":false,"cpe23_uri":"cve5:arista-networks:velocloud-orchestrator-on-prem:6.1.0:6.1.3.4"},{"vendor_slug":"arista-networks","vendor_name":"Arista Networks","product_slug":"velocloud-orchestrator-on-prem","product_name":"VeloCloud Orchestrator On-Prem","version_start":"6.4.0","version_start_inclusive":true,"version_end":"6.4.2.4","version_end_inclusive":false,"cpe23_uri":"cve5:arista-networks:velocloud-orchestrator-on-prem:6.4.0:6.4.2.4"},{"vendor_slug":"arista-networks","vendor_name":"Arista Networks","product_slug":"velocloud-orchestrator-on-prem","product_name":"VeloCloud Orchestrator On-Prem","version_start":"7.0.0","version_start_inclusive":true,"version_end":"7.0.0.1","version_end_inclusive":false,"cpe23_uri":"cve5:arista-networks:velocloud-orchestrator-on-prem:7.0.0:7.0.0.1"}],"exploit_refs":[],"news":[{"id":849,"source":"The Hacker News","url":"https://thehackernews.com/2026/07/attackers-exploit-arista-velocloud.html","title":"Attackers Exploit Arista VeloCloud Orchestrator Command Injection Flaw","summary":"A maximum-severity security flaw impacting on-premises versions of Arista VeloCloud Orchestrator (VCO) has come under active exploitation in the wild.\n\nThe vulnerability, tracked as CVE-2026-16812 (CVSS score: 10.0), is a case of operating system command injection that could pave the way for arbitrary code execution.\n\n\"VeloCloud Orchestrator (VCO) on-prem has a security issue where this issue","thumbnail_url":"https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj_Rqy6Y9a8XU8InktsbP7Op6N-6ZSvEQl0MJ2PL6_gd_s2ij5aL2vZHlW3sgsqtQQCY47wAO4RxIqqSUkQ7kXeXbhzEJe0g9VCbkC9pwEcGqKybszrRurMZQPQHsy6o8YLXYOZk1F9Cyp7kBQTFXjIzngB0_Jche9kzCVE_XIL7W24A-3ARqgisnibgAvw/s1600/cyber.jpg","author":"info@thehackernews.com (The Hacker News)","published_at":"2026-07-28T04:43:53Z","fetched_at":"2026-07-28T06:16:23.642722Z","trending_score":0.00003325451942171044,"cve_ids":["CVE-2026-16812"]}],"references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/24364-security-advisory-0144","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"cisa_reported","at":"2026-07-27T00:00:00Z","label":"Added to CISA KEV catalog","source":"kev"},{"type":"published","at":"2026-07-27T16:11:00.968000Z","label":"CVE published","source":null},{"type":"ssvc_changed","at":"2026-07-27T21:04:23.266331Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"first_article","at":"2026-07-28T04:43:53Z","label":"First news coverage","source":"The Hacker News"}]}