CVE-2026-16812 (GCVE-0-2026-16812)
Vulnerability from cvelistv5 – Published: 2026-07-27 16:11 – Updated: 2026-07-27 16:58Title
VeloCloud Orchestrator 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.
Severity
10 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.arista.com/en/support/advisories-noti… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Arista Networks | VeloCloud Orchestrator On-Prem |
Affected:
5.2.0 , < 5.2.3.14
(custom)
Affected: 6.1.0 , < 6.1.3.4 (custom) Affected: 6.4.0 , < 6.4.2.4 (custom) Affected: 7.0.0 , < 7.0.0.1 (custom) |
Date Public
2026-07-27 16:07
KEVIntel
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 0ab0b145-d51f-447c-8ca9-a77176d7904b
Exploited: Yes
Timestamps
First Seen: 2026-07-27
Asserted: 2026-07-27
Scope
Notes: VeloCloud Orchestrator OS Command Injection | Affected: Arista Networks / VeloCloud Orchestrator On-Prem | CVSS: 10.0 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | VeloCloud Orchestrator OS Command Injection |
| Vendor | Arista Networks |
| Product | VeloCloud Orchestrator On-Prem |
| Added Date | 2026-07-27T16:20:55.359Z |
| Cvss Score | 10.0 |
| Epss Score | None |
| Cvss Severity | CRITICAL |
| Epss Percentile | None |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | True |
References
Created: 2026-07-27 17:00 UTC
| Updated: 2026-07-27 17:00 UTC
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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\": \"2026-07-27T16:58:45.392Z\", \"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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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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