#VU107208 Improper Authentication in Joomla! - CVE-2025-25227

Vulnerability identifier: #VU107208

Vulnerability risk: Medium

CVSSv4.0: 5.2 [CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-25227

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Joomla!
Web applications / CMS

Vendor: Joomla!

Description

The vulnerability allows a remote attacker to bypass MFA authentication process.

The vulnerability exists due to an error when handling MFA authentication process. A remote attacker with valid credentials can bypass MFA authentication process and gain unauthorized access to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Joomla!: 1.0.0 - 1.0.15, 1.5 - 1.5.26, 1.6.0 - 1.6.6, 1.7.0 - 1.7.5, 2.5.0 - 2.5.28, 3, 3.0.0 - 3.0.4, 3.1.0 - 3.10.20, 3.2.0 - 3.2.7, 3.3.0 - 3.3.6, 3.4.0 - 3.4.8, 3.5.0 - 3.5.9, 3.6.0 - 3.6.5, 3.7.0 - 3.7.5, 3.8.0 - 3.8.13, 3.9.0 - 3.9.28, 4.0.0 - 4.0.6, 4.1.0 - 4.1.5, 4.2.0 - 4.2.9, 4.3.0 - 4.3.4, 4.4.0 - 4.4.12, 5.0.0 - 5.0.3, 5.1.0 - 5.1.4, 5.2.0 - 5.2.5, 11.2 - 11.4, 12.1 - 12.3, 13.1

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External links
https://developer.joomla.org/security-centre/964-20250402-core-mfa-authentication-bypass.html

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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.