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CVE-2025-43863

Vantage6 vulnerability

9.8 CRITICALEPSS 0.47%
  1. Published12 Jun 2025

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Vantage6< 4.11.0

Remediation

Fixed in
Vantage6≥ 4.11.0

References

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Frequently asked

Is CVE-2025-43863 being actively exploited?

CVE-2025-43863 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.47%.

How severe is CVE-2025-43863?

CVE-2025-43863 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.47% probability of exploitation.

Which products are affected by CVE-2025-43863?

Affected products include Vantage6.

How do I fix CVE-2025-43863?

Upgrade affected software to a fixed version, for example Vantage6 4.11.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-43863 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.