#VU107635 Improper Authentication in Moodle - CVE-2025-3627

Vulnerability identifier: #VU107635

Vulnerability risk: Medium

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-3627

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Moodle
Web applications / Other software

Vendor: moodle.org

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error when processing authentication requests with Multi-Factor Authentication enabled. A remote user can gain access to some of the user data after passing only the first login factor.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Moodle: 4.3.0 - 4.3.11, 4.4.0 - 4.4.7, 4.5.0 - 4.5.3

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External links
https://moodle.org/mod/forum/discuss.php?d=467594
https://github.com/search?q=repo%3Amoodle%2Fmoodle+MDL-84351&type=commits

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.