CVEs / CVE-2026-93952
CVE-2026-93952: Arista VeloCloud Orchestrator Improper Input Validation Vulnerability
- Known exploited in the CISA KEV catalog since 22 Sep 2026
- critical 9.5 CVSS 4.0 (from the CNA)
- EPSS 1.38% chance of exploitation in the next 30 days, higher than 72% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Arista VeloCloud Orchestrator (VCO) on-prem contains an improper input validation 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.
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. Hosted, including Dedicated, versions of VCO were impacted and have already been patched.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Arista Networks VeloCloud Orchestrator (VCO) On-Prem | from 5.2.0, up to and including 5.2.3.15 | — |
| Arista Networks VeloCloud Orchestrator (VCO) On-Prem | from 6.1.0, up to and including 6.1.3.7 | — |
| Arista Networks VeloCloud Orchestrator (VCO) On-Prem | from 6.4.0, up to and including 6.4.2.7 | — |
| Arista Networks VeloCloud Orchestrator (VCO) On-Prem | from 7.0.0, up to and including 7.0.0.2 | — |
Exploitation
| In CISA KEV since | 22 Sep 2026 |
|---|---|
| Due date for US federal agencies | 25 Sep 2026 |
| Used in ransomware campaigns | Unknown |
| 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. |
Severity
| CVSS 4.0 | 9.5 criticalCVSS:4.0/AV:N/AC:H/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:X/AU:X/R:X/V:X/RE:X/U:XScored by the CNA ([email protected]) |
|---|---|
| Weakness | CWE-20 |
References
- CVE-2026-93952 on NVD
- CVE-2026-93952 in the CISA KEV catalog
- https://www.arista.com/en/support/advisories-notices/security-advisory/24765-security-advisory-0183 (cited by CISA)
- https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk (cited by CISA)
- https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk (cited by CISA)
- https://www.arista.com/en/support/advisories-notices/security-advisory/24765-security-advisory-0183 Mitigation, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-93952 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.