CVE-2026-93952
KEV: known exploited SSVC: activeSecurity Advisory 0183
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS: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:X
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Attack conditions and impact
Derived from the CNA (via NVD) CVSS 3.1 vectorThis vulnerability may be exploitable over the internet without authentication or user interaction.
| Metric | Value | Meaning |
|---|---|---|
| Attack vector AV | N | Network |
| Attack complexity AC | L | Low (easy) |
| Privileges required PR | N | None |
| User interaction UI | N | None |
| Scope S | C | Changed (affects other components) |
| Confidentiality C | H | High |
| Integrity I | H | High |
| Availability A | H | High |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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.
Solutions (CNA)
The recommended resolution is to upgrade to a remediated VCO software version at your earliest convenience. These vulnerabilities have been fixed in the following releases: - VCO 5.2.3.16 and later in the 5.2.3 train - VCO 6.4.2.8 and later in the 6.4.2 train Releases in other release trains that fix this will be added over time. For VCOs not on a supported release train, customers can contact TAC to discuss possible upgrade options.
Workarounds (CNA)
Until fixed software is deployed, operators should apply defense-in-depth controls appropriate for their environment: - Restrict access to the VCO web interface to trusted administrative networks. - Monitor the VCO for accesses from known malicious source IPs. - Monitor for unexpected outbound network activity from the VCO host. - Consider blocking outbound ports not needed for normal activities. - Monitor for backdoor daemons and webshells. - Review recent administrator activity for unexpected changes.
CISA KEV entry
Arista VeloCloud Orchestrator Improper Input Validation Vulnerability — Arista / VeloCloud Orchestrator
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.
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.
https://www.arista.com/en/support/advisories-notices/security-advisory/24765-security-advisory-0183 ; ; 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-2026-93952
CVSS assessments
| Provider | Version | Score | Vector |
|---|---|---|---|
| NVD / [email protected] (Secondary) | 4.0 | 9.5 CRITICAL | CVSS: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:X |
| NVD / [email protected] (Secondary) | 3.1 | 10.0 CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| CNA / Arista | 3.1 | 10.0 CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| CNA / Arista | 4.0 | 9.5 CRITICAL | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H |
Affected products and packages
CNA (CVE.org)
| Vendor | Product | Versions |
|---|---|---|
| Arista Networks | VeloCloud Orchestrator (VCO) On-Prem | affected: 5.2.0 … <= 5.2.3.15 affected: 6.1.0 … <= 6.1.3.7 affected: 6.4.0 … <= 6.4.2.7 affected: 7.0.0 … <= 7.0.0.2 default: unaffected |
NVD CPE (4)
Show CPE list
| Vendor | Product | Range | CPE |
|---|---|---|---|
| arista | velocloud_orchestrator | >= 5.2.0, < 5.2.3.16 | cpe:2.3:a:arista:velocloud_orchestrator:*:*:*:*:*:*:*:* |
| arista | velocloud_orchestrator | >= 6.1.0, <= 6.1.3.7 | cpe:2.3:a:arista:velocloud_orchestrator:*:*:*:*:*:*:*:* |
| arista | velocloud_orchestrator | >= 6.4.0, < 6.4.2.8 | cpe:2.3:a:arista:velocloud_orchestrator:*:*:*:*:*:*:*:* |
| arista | velocloud_orchestrator | >= 7.0.0, <= 7.0.0.2 | cpe:2.3:a:arista:velocloud_orchestrator:*:*:*:*:*:*:*:* |
Linux distribution status
References (2)
- https://www.arista.com/en/support/advisories-notices/security-advisory/24765-security-advisory-0183 NVD, CNA MitigationVendor Advisoryvendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-93952 NVD, ADP CISA-ADP US Government Resourcegovernment-resource