Replace Default Certificates in Hitachi Vantara Remot Ops Agent to Block Admin Access
Attackers can forge login tokens if the default self-signed certificate remains active, granting them full control over the application.
Key points
- The flaw allows attackers to bypass login and gain administrative access to Hitachi Vantara Remot Ops Agent.
- The vulnerability exists in versions up to 2.0 when the default self-signed SSL certificate is used.
- The National Vulnerability Database rates the issue as critical with a CVSS score of 9.1.
Hitachi Vantara Remot Ops Agent contains a flaw that lets attackers take over administrative control if the system uses its default security certificate. This happens because the certificate signs the digital tokens that prove a user is logged in. If an attacker can create their own valid tokens, they can pretend to be an administrator without knowing any passwords.
In plain English
The application uses a digital certificate to sign access tokens. These tokens act like digital signatures on a letter, proving the message came from a trusted source. When the system relies on the default self-signed certificate, that trust is weak. An attacker can generate their own signature that the system accepts as valid, allowing them to bypass the login screen entirely.
The background
The National Vulnerability Database lists this issue as CVE-2026-108336. It carries a CVSS score of 9.1, which classifies it as critical. The weakness is categorized under CWE-321, which relates to generation of identifiable tokens without proper validation. The flaw affects Hitachi Vantara Remot Ops Agent versions up to 2.0. It does not affect newer versions or configurations that have replaced the default certificate.
What changes now
Administrators must check whether their installations are using the default self-signed certificate. If the default certificate is present, the system is vulnerable to token forgery. Once an attacker gains access, they can configure the service and request log collection. However, the source material states that device credentials and customer data cannot be accessed through this specific vulnerability.
Key terms explained
Teams usually rely on certificates to verify identity in digital communications. A self-signed certificate is created by the system itself rather than by a trusted third party. When a system accepts its own signature as proof of authority, it creates a weak link. Attackers can exploit this by creating their own signatures that the system mistakenly trusts. Check whether your environment uses unique, externally verified certificates instead of defaults.
What to do and how to stay safe: Hitachi Vantara
- Verify if your Hitachi Vantara Remot Ops Agent installation is using the default self-signed SSL certificate.
- Replace the default certificate with a unique, trusted certificate to prevent token forgery.
- Monitor administrative logs for unauthorized configuration changes or unexpected log collection requests.
- Review access controls to ensure that administrative actions are logged and alerting is enabled.
Step-by-step guide: Risk-Based Vulnerability Management: Benefits, Limits, and Reality
General security guidance from the Vector Update newsroom. It is not confirmed advice from the organisations named in this story.
Frequently asked questions
What versions of Hitachi Vantara Remot Ops Agent are affected?
Versions up to 2.0 are affected when the default self-signed certificate is used.
Can attackers steal customer data through this flaw?
No, device credentials and customer data cannot be accessed with this vulnerability.
What is the severity rating of CVE-2026-108336?
The NVD rates it as critical with a CVSS score of 9.1.
