High severity · published Oct 23, 2025
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
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
Moodle’s mobile and web service authentication endpoints did not sufficiently restrict repeated password attempts, making them susceptible to brute-force attacks.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 34% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
Moodle · Moodle
4.1.0 before 4.1.21; 4.4.0 before 4.4.11; 4.5.0 before 4.5.7; 5.0.0 before 5.0.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-62399
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-62399
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2025-62399
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2404432
More from Moodle
10.0
CVE-2019-3809
A flaw was found in Moodle versions 3.1 to 3.1.15 and earlier unsupported versions
9.8
CVE-2025-67856
A flaw was found in Moodle
9.8
CVE-2025-26533
An SQL injection risk was identified in the module list filter within course search
9.8
CVE-2024-33999
The referrer URL used by MFA required additional sanitizing, rather than being used directly
9.8
CVE-2023-5550
In a shared hosting environment that has been misconfigured to allow access to other users' content, a Moodle user who also has direct access to the web server outside of the…