PatchSiren cyber security CVE debrief
CVE-2026-54445 vantage6 CVE debrief
CVE-2026-54445 is a medium-severity vulnerability in vantage6, an open-source infrastructure for privacy-preserving analysis. The issue arises from versions prior to 5.0.0 providing an initial user with a default username of 'root' and password 'root'. This is a security risk as attackers are likely to know that many vantage6 servers have a 'root' user with admin rights and the initial password is weak. Administrators might also forget to reset it. Version 5.0.0 addresses this issue. As a temporary fix, the 'root' user can be deleted after it's used to create other users.
- Vendor
- vantage6
- Product
- Unknown
- CVSS
- MEDIUM 6.9
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-06-17
- Original CVE updated
- 2026-06-23
- Advisory published
- 2026-06-17
- Advisory updated
- 2026-06-23
Who should care
Organizations using vantage6 versions prior to 5.0.0 should be concerned about CVE-2026-54445. This includes administrators and security teams responsible for maintaining and securing their vantage6 infrastructure. Given the medium severity and potential for exploitation, attention is necessary to mitigate the risk of unauthorized access.
Technical summary
CVE-2026-54445 involves a default credentials vulnerability in vantage6. Specifically, versions before 5.0.0 come with a pre-configured 'root' user account with the password 'root'. This setup is problematic because it provides an easy target for attackers. The CVSS score for this vulnerability is 6.9, indicating a medium severity level. The vulnerability can be exploited over the network with low attack complexity, requiring no user interaction. Successful exploitation could lead to limited confidentiality and integrity impacts.
Defensive priority
Medium
Recommended defensive actions
- Upgrade to vantage6 version 5.0.0 or later to remove the default 'root' user credentials.
- Immediately change the 'root' user's password if the system is running a version prior to 5.0.0.
- Delete the 'root' user account after ensuring it is not in use for administrative tasks.
- Implement strong password policies for all user accounts.
- Regularly review and update user accounts and passwords.
- Monitor for any suspicious login attempts to the vantage6 system.
Evidence notes
The information provided is based on the CVE-2026-54445 record and related sources. The CVE was published on 2026-06-17 and modified on 2026-06-18. The vulnerability affects vantage6 versions prior to 5.0.0. The CVSS score is 6.9, classified as medium severity. The CWE-204 and CWE-1393 weaknesses are associated with this vulnerability.
Official resources
CVE-2026-54445 was published on 2026-06-17 and modified on 2026-06-18.