CVE-2025-43863: VANTAGE6

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

vantage6 is an open source framework built to enable, manage and deploy privacy enhancing technologies like Federated Learning and Multi-Party Computation. If attacker gets access to an authenticated session, they can try to brute-force the user password by using the change password functionality: they can call that route infinitely which will return the message that password is wrong until it is correct. This vulnerability is fixed in 4.11.

Affected products

• VANTAGE6 VANTAGE6: before 4.11.0 (fixed in 4.11.0)

Published 2025-06-12. Last modified 2026-06-17.