CVE-2025-27429 is a critical vulnerability classified under CWE-94 (Improper Control of Generation of Code) affecting SAP S/4HANA Private Cloud versions S4CORE 102 through 108. The vulnerability resides in a function module exposed via Remote Function Call (RFC), which allows an attacker possessing valid user privileges to inject arbitrary ABAP code into the system. This injection bypasses essential authorization checks, effectively creating a backdoor within the SAP environment. The injected code can execute with elevated privileges, enabling attackers to manipulate system data, disrupt operations, or exfiltrate sensitive information. The vulnerability impacts the core SAP S/4HANA system, undermining confidentiality, integrity, and availability. The CVSS v3.1 base score of 9.9 reflects the vulnerability's critical nature, with network attack vector, low attack complexity, required privileges, no user interaction, and scope change. Although no public exploits are currently known, the flaw's characteristics make it highly exploitable once weaponized. The vulnerability affects multiple recent SAP S/4HANA versions, indicating a broad attack surface in enterprise environments relying on SAP's private cloud solutions. The lack of available patches at the time of disclosure necessitates immediate mitigation efforts to reduce risk.

The impact of CVE-2025-27429 on organizations worldwide is severe. Successful exploitation allows attackers to execute arbitrary ABAP code with elevated privileges, effectively gaining full control over the SAP S/4HANA system. This can lead to unauthorized data access, data manipulation, deletion, or exfiltration, severely compromising confidentiality and integrity. Additionally, attackers can disrupt business-critical processes, causing denial of service or operational downtime, impacting availability. Given SAP S/4HANA's widespread use in large enterprises for ERP and critical business functions, this vulnerability poses a significant risk to financial operations, supply chain management, and regulatory compliance. The ability to bypass authorization checks increases the threat from insider attackers or compromised accounts. The vulnerability's exploitation could facilitate further lateral movement within corporate networks, escalating the overall impact. Organizations may face financial losses, reputational damage, and regulatory penalties if exploited.

1. Immediately review and restrict user privileges to the minimum necessary, especially for users with access to RFC interfaces. 2. Implement strict monitoring and logging of RFC calls and ABAP code execution to detect anomalous activities indicative of code injection attempts. 3. Apply SAP security notes and patches as soon as they become available for the affected S/4HANA versions. 4. Employ network segmentation to limit access to SAP systems and restrict RFC communication to trusted sources only. 5. Conduct regular security audits and penetration testing focused on SAP environments to identify and remediate potential weaknesses. 6. Utilize SAP's built-in security tools such as SAP Enterprise Threat Detection to monitor for suspicious behavior. 7. Educate SAP administrators and developers about secure coding practices and the risks of code injection. 8. Consider deploying runtime application self-protection (RASP) or web application firewalls (WAF) capable of detecting and blocking code injection patterns targeting SAP interfaces. 9. Maintain an incident response plan tailored for SAP system compromises to enable rapid containment and recovery.