CVE-2025-52827 is a high-severity vulnerability classified under CWE-502, which pertains to the deserialization of untrusted data. This vulnerability affects the product Nuss developed by uxper, specifically versions up to 1.3.3. Deserialization vulnerabilities occur when an application deserializes data from untrusted sources without sufficient validation, allowing attackers to manipulate the serialized objects. In this case, the vulnerability enables object injection, which can lead to remote code execution, privilege escalation, or other malicious actions depending on the application's context and the objects involved. The CVSS v3.1 base score is 8.8, indicating a high impact with the vector AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. This means the attack can be performed remotely over the network with low attack complexity, requires low privileges, and no user interaction. The scope is unchanged, but the impact on confidentiality, integrity, and availability is high. No public exploits are known at this time, and no patches have been linked yet. The vulnerability was published on June 27, 2025, and reserved on June 19, 2025. The lack of patches suggests that organizations using Nuss versions up to 1.3.3 remain vulnerable until a fix is released. Given the nature of object injection, attackers could potentially execute arbitrary code or manipulate application logic, leading to severe consequences including data breaches, system compromise, and service disruption.

For European organizations, the impact of CVE-2025-52827 can be significant, especially for those relying on the Nuss product in their IT infrastructure. The high confidentiality, integrity, and availability impacts mean that sensitive data could be exposed or altered, critical services could be disrupted, and attackers could gain persistent access to internal systems. This is particularly concerning for sectors with stringent data protection requirements such as finance, healthcare, and government institutions within Europe, where breaches could lead to regulatory penalties under GDPR. Additionally, the low attack complexity and remote exploitability increase the risk of widespread exploitation once an exploit becomes available. Organizations using Nuss without proper mitigations may face operational downtime, reputational damage, and financial losses. The absence of a patch at the time of publication necessitates immediate risk management actions to prevent exploitation.

1. Immediate mitigation should include restricting network access to the Nuss application to trusted IP addresses and internal networks only, minimizing exposure to remote attackers. 2. Implement strict input validation and filtering on any data that is deserialized by the application, if possible, to detect and block malicious payloads. 3. Employ runtime application self-protection (RASP) or web application firewalls (WAF) with custom rules to detect and prevent suspicious deserialization patterns or object injection attempts. 4. Monitor application logs and network traffic for unusual behavior indicative of exploitation attempts, such as unexpected serialized object payloads or anomalous requests. 5. Engage with the vendor (uxper) to obtain patches or updates as soon as they become available and plan for prompt deployment. 6. Conduct a thorough audit of all systems running Nuss to identify affected versions and isolate or upgrade them accordingly. 7. Educate development and security teams about the risks of deserialization vulnerabilities and encourage secure coding practices to avoid similar issues in the future.