CVE-2025-62257 is a medium-severity vulnerability classified under CWE-307, indicating improper restriction of excessive authentication attempts. It affects Liferay Portal versions 7.4.0 through 7.4.3.119 and multiple Liferay DXP versions from 2023 and 2024. The vulnerability allows remote attackers to conduct password enumeration attacks by brute forcing login credentials, even when account lockout policies are enabled. This suggests that the lockout mechanism either does not trigger correctly or can be circumvented, allowing attackers to test multiple passwords against user accounts without being blocked. The vulnerability does not require authentication or user interaction and can be exploited remotely over the network. The impact is limited to confidentiality compromise, as attackers can discover valid passwords, potentially leading to unauthorized access to sensitive systems and data. The CVSS 4.0 vector (AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N) indicates low attack complexity, no privileges or user interaction required, and limited impact on confidentiality only. No public exploits have been reported yet, but the vulnerability poses a significant risk to organizations relying on affected Liferay versions for portal or digital experience management.

For European organizations using Liferay Portal or Liferay DXP, this vulnerability could lead to unauthorized access to internal portals, intranet sites, or customer-facing digital experience platforms. Successful exploitation may result in compromise of user accounts, exposing sensitive corporate or personal data, intellectual property, or internal communications. Given Liferay's use in government, education, and enterprise sectors across Europe, attackers could leverage this vulnerability to gain footholds for further lateral movement or data exfiltration. The ability to bypass account lockout mechanisms increases the risk of automated brute force attacks, potentially leading to widespread credential compromise. This could undermine trust in digital services, cause regulatory compliance issues under GDPR, and result in financial and reputational damage. The medium CVSS score reflects moderate impact, but the ease of exploitation and scope of affected versions make it a significant concern for organizations with unpatched Liferay deployments.

Organizations should immediately identify all instances of Liferay Portal and Liferay DXP in their environment and verify the version numbers against the affected list. Since no official patches are linked yet, administrators should implement additional protective controls such as: 1) Enforce multi-factor authentication (MFA) for all user accounts to mitigate password compromise risks. 2) Deploy web application firewalls (WAFs) with rules to detect and block brute force and enumeration attempts targeting Liferay login endpoints. 3) Implement rate limiting and IP blacklisting to restrict repeated authentication attempts from the same source. 4) Monitor authentication logs for unusual patterns indicative of enumeration or brute force activity. 5) Consider temporarily disabling or restricting external access to Liferay portals until patches are available. 6) Educate users on strong password policies and encourage regular password changes. 7) Stay updated with Liferay vendor advisories for official patches or workarounds and apply them promptly once released.