CVE-2025-43863
CVSS v3
9.8
CRITICAL
EPSS Score
0.5 %
exploit probability, as of 2026-10-12
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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Affected and fixed versions
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Packages
- vantage6PyPIall versions · fixed in 4.11.0
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.
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2025-06-12
- Last Modified
- 2025-09-17
Frequently asked questions
What is CVE-2025-43863?
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.
Is CVE-2025-43863 actively exploited?
Active exploitation of CVE-2025-43863 has not been confirmed. Its EPSS score was 0.5% on 2026-10-12, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2025-43863?
CVE-2025-43863 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
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Related vulnerabilities
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