Security Advisory 0191

Date: October 6, 2026

Revision	Date	Changes
1.0	October 6, 2026	Initial release

The CVE-ID tracking this issue: CVE-2026-102156
CVSSv3.1 Base Score: 6.8 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N)
CVSSv4.0 Base Score: 6.9 (CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N)
Common Weakness Enumeration: CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
This vulnerability is being tracked by BUG 1731907

Description

The CVE covered in this advisory affects only CloudVision-CUE on-premises. CV-CUE is Arista’s Wi-Fi management service and, in on-premises deployments, is hosted as a service on the CloudVision Portal on-premises platform. Customers running CV-CUE services should review the affected versions to assess their impact.

Improper neutralization of Lightweight Directory Access Protocol (LDAP) authentication input may allow an unauthenticated network attacker, under high-complexity conditions, to inject queries against the configured directory service.

This issue was discovered internally by Arista, and the company is not aware of any malicious exploitation of this vulnerability in customer networks.

Vulnerability Assessment

Platform and Software Applicability Note

To determine actual exposure, operators should first check their software versions against the "Affected Software" list below. If your software release is not listed, your deployment is not vulnerable, regardless of the hardware platform in use.

Affected Software

CloudVision Portal Versions

2026.2.0
All prior releases back to 2021.2.0

Affected Platforms

The following products are affected by this vulnerability:

CloudVision CUE on-premises, virtual appliance or physical appliance (Note: packaged as part of CloudVision Portal on-premises software)

The following product versions and platforms are not affected by this vulnerability:

Arista EOS-based products:

710 Series
720D Series
720XP/722XPM Series
750X Series
7010TX Series
7020R/R4 Series
7130 Series running EOS
7170 Series
7050X3/X4 Series
7060X/X2/X4/X5/X6 Series
7260X/X3 Series
7280R/R2/R3/R4 Series
7300X/X3 Series
7320X Series
7358X4 Series
7368X4 Series
7388X5 Series
7500R/R2/R3 Series
7800R3/R4 Series
7700R4 Series
AWE 5000 Series
AWE 7200R Series
ZTX-7200 Series
CloudEOS
cEOS-lab
vEOS-lab
CloudVision eXchange, virtual or physical appliance

Wi-Fi Access Points
CloudVision CUE cloud service delivery
CloudVision Portal, virtual appliance or physical appliance
CloudVision Appliance Software
CloudVision as-a-Service
CloudVision AGNI - Cloud service delivery
CloudVision AGNI - Virtual or physical appliance
Arista 7130 Systems running MOS
Arista Converged Cloud Fabric (formerly Big Switch BCF)
DANZ Monitoring Fabric (DMF) - Controller Appliance
DANZ Monitoring Fabric (DMF) - Analytics Node Appliance
DANZ Monitoring Fabric (DMF) - Recorder Node Appliance
DANZ Monitoring Fabric (DMF) - Service Node Appliance
Arista Multi Cloud Director (formerly Big Switch MCD)
Arista Network Detection and Response (NDR) Security Platform (Formerly Awake NDR)
Arista Edge Threat Management - Arista NG Firewall and Arista Micro Edge (Formerly Untangle)
Arista NetVisor OS, Arista NetVisor UNUM, and Insight Analytics (Formerly Pluribus)
VeloCloud Orchestrator (Formerly VeloCloud Orchestrator by Broadcom)
VeloCloud Gateway (Formerly VeloCloud Gateway by Broadcom)
VeloCloud Edge (Formerly VeloCloud Edge by Broadcom)

Required Configuration for Exploitation

Both of the following conditions must be met:

CV-CUE backend (wifimanager) must be enabled and running.
LDAP authentication must be enabled for the User Accounts.

Here is an example of the command to inspect the status of wifimanager:

[root@]# cvpi status wifimanager 
Executing command. This may take some time... 
Completed 1/1 discovered actions 
primary components total:1 running:1 disabled:0

Here is an example screenshot of the “LDAP Authentication” configuration option enabled:

Arista Security Advisory 191

Indicators of Compromise

There is no direct indicator of compromise for this issue. Please contact support if suspicious activity patterns are found in the system, as mentioned below.

Repeated entries containing “ldapsearch return value [49]” in the ldap.log file (inside log folder /opt/wibhu/spectraguard/log) may indicate attempted exploitation. Log folder can be found with following commands, when run from CVP shell.

[root@]# nerdctl exec -it wifimanager -- bash
[root@]# cd /opt/wibhu/spectraguard/log

These messages can be found with the following grep command, when run from the CV-CUE shell:

grep -r --include="ldap.log" "ldapsearch return value \[49\]" /

Mitigation

The recommended mitigation is to disable LDAP Authentication. Prior to implementing this, please ensure that an alternative authentication mechanism is properly configured and verified, as disabling LDAP authentication will prevent LDAP-dependent users from accessing or managing CV-CUE, which may render the management service unavailable to them.

Here is an example screenshot of the “LDAP Authentication” configuration option:

Arista Security Advisory 191

Resolution

The recommended resolution is to upgrade to a remediated software version at your earliest convenience. Arista recommends customers move to the latest version of each release that contains all the fixes listed below. For more information about upgrading see CloudVision Users Manual: Upgrade.

CVE-2026-102156 have been fixed in the following releases:

2026.2.1 and later releases

Hotfix

No hotfix available for those vulnerabilities

For More Information

If you require further assistance, or if you have any further questions regarding this security notice, please contact the Arista Networks Technical Assistance Center (TAC) by one of the following methods:

Open a Service Request

Contact information needed to open a new service request may be found at:
https://www.arista.com/en/support/customer-support

Security Advisories