CVE-2025-7718 is a high-severity vulnerability affecting the Resideo Plugin for the Resideo - Real Estate WordPress Theme. This vulnerability arises from improper authorization checks in the plugin's user detail update functionality. Specifically, the plugin fails to properly validate the identity of users before allowing changes to critical account details such as email addresses. As a result, an authenticated attacker with at least Subscriber-level access can modify the email address of any user, including administrators. This unauthorized modification enables the attacker to initiate a password reset process for the targeted account, effectively allowing account takeover and privilege escalation. The vulnerability is classified under CWE-639 (Authorization Bypass Through User-Controlled Key), indicating that the flaw stems from insufficient authorization controls when processing user-controlled input. The CVSS v3.1 base score of 8.8 reflects the vulnerability's high impact on confidentiality, integrity, and availability, with network attack vector, low attack complexity, and no user interaction required. All versions of the plugin up to and including 2.5.4 are affected, and no official patches have been released at the time of this report. Although no known exploits are currently observed in the wild, the ease of exploitation and the critical impact make this a significant threat to WordPress sites using this plugin, particularly those managing sensitive real estate data or administrative workflows.

For European organizations, this vulnerability poses a substantial risk, especially for real estate agencies, property management firms, and other businesses using the Resideo WordPress theme and plugin. Successful exploitation can lead to unauthorized access to administrator accounts, enabling attackers to manipulate website content, steal sensitive client information, or deploy further malicious payloads such as ransomware or phishing pages. The compromise of administrative accounts undermines the integrity and availability of the affected websites, potentially causing operational disruptions and reputational damage. Additionally, given the GDPR regulations in Europe, unauthorized access and data breaches involving personal data could result in significant legal and financial penalties. The vulnerability's network-exploitable nature means attackers can attempt exploitation remotely without user interaction, increasing the threat surface. Organizations relying on this plugin for their online presence must consider the risk of data leakage, service disruption, and compliance violations.

Immediate mitigation steps include disabling or uninstalling the Resideo plugin until a security patch is released. Organizations should audit user roles and permissions to ensure that only trusted users have Subscriber-level or higher access. Implementing multi-factor authentication (MFA) for all administrative and privileged accounts can reduce the risk of account takeover even if credentials are compromised. Monitoring logs for unusual email change requests or password reset activities can help detect exploitation attempts early. Network-level protections such as Web Application Firewalls (WAFs) should be configured to detect and block suspicious requests targeting the plugin's user update endpoints. Once a patch is available, prompt application of the update is critical. Additionally, organizations should review and harden their WordPress security posture by limiting plugin usage to trusted and actively maintained components, conducting regular security assessments, and educating users on phishing and social engineering risks that could compound this vulnerability.