CVE-2024-21671

lowpriority · track · 15EPSS 0.004 · 34 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.40% (34th) EPSS

CVSS 3.7 · low

Is it mine?

5 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

The vantage6 technology enables to manage and deploy privacy enhancing technologies like Federated Learning (FL) and Multi-Party Computation (MPC). It is possible to find out usernames from the response time of login requests. This could aid attackers in credential attacks. Version 4.2.0 patches this vulnerability.

cvss

Technical severity, 0–10. One row per scoring source.

3.7

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.13.7lowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:Nprimary · NVD / NIST USexploitability 2.2 · impact 1.4

v3.13.7lowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · ENISA EU

v3.13.7lowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · security-advisories@github.comexploitability 2.2 · impact 1.4

v3.13.7lowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · OSV

v3.13.4lowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-203USprimaryCWE-208USCWE-208US

affected products (5)

Products and version ranges known to be affected.

vantage6 vantage6≤ < 4.2.0enisa_euvdEU
vantage6 vantage6all versionsenisa_euvdEU
vantage6 vantage6< 4.2.0nvdUScpe:2.3:a:vantage6:vantage6:*:*:*:*:*:*:*:*
PyPI vantage6< 4.2.0osvUSpkg:pypi/vantage6
PyPI vantage6-server< 4.2.0osvUSpkg:pypi/vantage6-server

advisories (3)

Vendor and ecosystem advisories describing this.

GHSA-45gq-q4xh-cp53vantage6 vulnerable to username timing attack2024-01-30ghsa · osvUS
### Impact It is possible to find out usernames from the response time of login requests. This could aid attackers in credential attacks ### Workarounds No
PYSEC-2024-312024-01-30vendor · osvUS
The vantage6 technology enables to manage and deploy privacy enhancing technologies like Federated Learning (FL) and Multi-Party Computation (MPC). It is possible to find out usernames from the response time of login requests. This could aid attackers in credential attacks. Version 4.2.0 patches this vulnerability.
PYSEC-2026-2008vantage6 vulnerable to username timing attack2026-07-07vendor · osvUS
### Impact It is possible to find out usernames from the response time of login requests. This could aid attackers in credential attacks ### Workarounds No

also known as (8)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv nvd NVD CVE.org MITRE

published 2024-01-30modified 2026-06-17

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+881 more

references (7)

External citations — patches, advisories, analysis.

scry

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