CVE-2026-16812 (GCVE-0-2026-16812)
Vulnerability from cvelistv5
Published
2026-07-27 16:11
Modified
2026-07-28 03:56
Severity ?
10.0 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
10.0 (Critical) - 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
CWE
  • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Summary
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. This functionality was intended to be for internal use only and is not intended to be remotely accessible. Hosted and Dedicated versions of VCO have already been patched in advance of this notice going out. This issue was discovered externally and is known to be actively exploited.
References
Impacted products
Vendor Product Version
Arista Networks VeloCloud Orchestrator On-Prem Version: 5.2.0   < 5.2.3.14
Version: 6.1.0   < 6.1.3.4
Version: 6.4.0   < 6.4.2.4
Version: 7.0.0   < 7.0.0.1
 Create a notification for this product.
CISA Known Exploited Vulnerability
Data from the CISA Known Exploited Vulnerabilities Catalog

Date added: 2026-07-27

Due date: 2026-07-30

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.

Used in ransomware: Unknown

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

Show details on NVD website

To clipboard 

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Successful exploitation may compromise the confidentiality, integrity, and availability of the orchestrator and data managed by the orchestrator.\u003c/p\u003e\\n\u003cp\u003eThis functionality was intended to be for internal use only and is not intended to be remotely accessible.\u003c/p\u003e\\n\u003cp\u003eHosted and Dedicated versions of VCO have already been patched in advance of this notice going out.\u003c/p\u003e\\n\u003cp\u003eThis issue was discovered externally and is known to be actively exploited.\u003c/p\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-78\", \"description\": \"CWE-78 Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)\"}]}], \"configurations\": [{\"lang\": \"en\", \"value\": \"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.\\n\\n\\n\\n\\nDeployments that restrict VCO web interface access to trusted administrative networks can reduce risk of exposure.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eVCO 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.\u003c/p\u003e\\n\u003cp\u003eDeployments that restrict VCO web interface access to trusted administrative networks can reduce risk of exposure.\u003c/p\u003e\", \"base64\": false}]}], \"providerMetadata\": {\"orgId\": \"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7\", \"shortName\": \"Arista\", \"dateUpdated\": \"2026-07-27T16:11:00.968Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-16812\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-28T03:56:40.567Z\", \"dateReserved\": \"2026-07-23T21:46:32.558Z\", \"assignerOrgId\": \"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7\", \"datePublished\": \"2026-07-27T16:11:00.968Z\", \"assignerShortName\": \"Arista\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
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  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.