What is CVE-2025-62399?

CVE-2025-62399 is a high-severity vulnerability in Moodle, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 7.5/10. Published 2025-10-23.

How severe is CVE-2025-62399?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Moodle

CVE-2025-62399

Moodle’s mobile and web service authentication endpoints did not sufficiently restrict repeated password attempts, making them susceptible to brute-force attacks.

EPSS: 0.004 (30.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Moodle

Weakness classification (CWE)

CWE-307 — Improper Restriction of Excessive Authentication Attempts

References

patrick@puiterwijk.org (x_refsource_REDHAT, Third Party Advisory, vdb-entry)
patrick@puiterwijk.org (x_refsource_REDHAT, issue-tracking, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2025-62399?: CVE-2025-62399 is a high-severity vulnerability in Moodle, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 7.5/10. Published 2025-10-23.
How severe is CVE-2025-62399?: High severity. CVSS v3 base score is 7.5 out of 10.