Versa VOS up to 21.2.3 Node.js Web Service default credentials

Summaryinfo

A vulnerability classified as very critical was found in Versa VOS up to 21.2.3. Affected by this vulnerability is an unknown functionality of the component Node.js Web Service. Executing a manipulation can lead to default credentials. This vulnerability is registered as CVE-2026-107241. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Versa VOS up to 21.2.3. It has been declared as very critical. This vulnerability affects an unknown function of the component Node.js Web Service. The manipulation with an unknown input leads to a default credentials vulnerability. The CWE definition for the vulnerability is CWE-1392. The product uses default credentials (such as passwords or cryptographic keys) for potentially critical functionality. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The Node.js web service on VOS (previously Versa FlexVNF) is used for URL-based Zero Touch Provisioning (ZTP) of the VOS appliance and is not required after provisioning is complete. This service authenticates users and administrators to its web interface during initial provisioning using default credentials and HTTP Basic Authentication. An attacker with network access who knows the default credentials could authenticate to the service and perform provisioning actions on the VOS appliance.  Versa’s security hardening guide for Hubs, Branches, and Controllers recommends disabling the Node.js web service after the initial provisioning of the VOS device. This vulnerability is not exploitable on VOS devices where the Node.js web service has been disabled.

The advisory is available at security-portal.versa-networks.com. This vulnerability was named CVE-2026-107241 since 10/07/2026. The exploitation appears to be easy. The attack can be initiated remotely. The exploitation requires an enhanced level of successful authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/10/2026).

Upgrading to version 22.1.2, 22.1.3, 22.1.4 or 23.1.2 eliminates this vulnerability.

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Productinfo

Vendor

• Versa

Name

• VOS

Version

• 21.2.0
• 21.2.1
• 21.2.2
• 21.2.3

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CPE 2.2info

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