CVE-2025-32501 is a high-severity vulnerability identified in the dimafreund RentSyst software, specifically a Cross-Site Request Forgery (CSRF) vulnerability classified under CWE-352. This vulnerability affects versions up to 2.0.92 of RentSyst. The issue allows an attacker to perform unauthorized actions on behalf of an authenticated user by exploiting the lack of proper CSRF protections. Additionally, this CSRF vulnerability facilitates Stored Cross-Site Scripting (Stored XSS), which can lead to persistent injection of malicious scripts into the application. The CVSS 3.1 base score of 7.1 reflects the high impact, with the vector indicating that the attack can be launched remotely over the network (AV:N), requires low attack complexity (AC:L), no privileges (PR:N), but does require user interaction (UI:R). The scope is changed (S:C), meaning the vulnerability affects resources beyond the initially vulnerable component. The impact affects confidentiality, integrity, and availability at a low level each (C:L, I:L, A:L). The lack of available patches at the time of publication increases the risk for organizations using RentSyst. The vulnerability's exploitation could allow attackers to execute arbitrary scripts in the context of the victim’s browser, potentially stealing session tokens, manipulating user data, or performing unauthorized operations within the RentSyst application. The combination of CSRF and Stored XSS increases the attack surface and potential damage, as attackers can trick users into executing malicious requests while also injecting persistent scripts that affect multiple users.

For European organizations using RentSyst, this vulnerability poses a significant risk to the security and integrity of their rental management operations. Exploitation could lead to unauthorized transactions, data manipulation, or leakage of sensitive tenant or property information. The Stored XSS component can facilitate further attacks such as session hijacking, credential theft, or distribution of malware within the user base. Given that RentSyst is likely used by property management companies, real estate agencies, and landlords, the compromise of this system could disrupt business operations, damage reputation, and lead to regulatory non-compliance, especially under GDPR requirements for protecting personal data. The requirement for user interaction means phishing or social engineering could be used to trigger the attack, increasing the risk in environments where users are less security-aware. The absence of known exploits in the wild currently provides some relief, but the high CVSS score and lack of patches mean organizations should act proactively to mitigate risks.

Organizations should immediately review their use of RentSyst and implement compensating controls until an official patch is released. Specific recommendations include: 1) Implementing strict Content Security Policy (CSP) headers to limit the impact of Stored XSS by restricting script execution sources. 2) Employing web application firewalls (WAFs) with rules targeting CSRF and XSS attack patterns to detect and block malicious requests. 3) Educating users on phishing and social engineering risks to reduce the likelihood of user interaction triggering the exploit. 4) Reviewing and restricting browser cookie settings, such as using the SameSite attribute to mitigate CSRF risks. 5) Monitoring application logs for unusual activity that could indicate exploitation attempts. 6) Segregating RentSyst access within the network and enforcing strong authentication and session management policies. 7) Engaging with the vendor or community to track patch releases and apply updates promptly once available. 8) Conducting security testing and code review of any custom integrations with RentSyst to identify additional vulnerabilities.