CVE-2025-63421 identifies a vulnerability in filosoft Comerc.32 Commercial Invoicing software, specifically version 16.0.0.3. The flaw resides in the comeinst.exe executable, which can be manipulated by a local attacker to execute arbitrary code. This means an attacker with local system access can potentially run malicious code with the privileges of the user executing comeinst.exe, potentially leading to full system compromise. The vulnerability does not require remote access or user interaction beyond local presence, which limits its exploitation vector but does not diminish its severity for compromised or insider-threat scenarios. No CVSS score is currently assigned, and no public exploits have been reported, indicating it may be a recently disclosed or under-researched issue. The lack of patch links suggests that a vendor fix is either pending or not publicly available yet. The vulnerability impacts the confidentiality, integrity, and availability of systems running the affected software, as arbitrary code execution can lead to data theft, system manipulation, or denial of service. The invoicing software is likely used in commercial and financial environments, making it a valuable target for attackers aiming to disrupt business operations or steal sensitive financial data.

For European organizations, this vulnerability poses a significant risk to financial and commercial operations relying on filosoft Comerc.32. Successful exploitation could lead to unauthorized access to sensitive invoicing data, manipulation of financial records, or disruption of billing processes. This can result in financial losses, regulatory non-compliance (e.g., GDPR breaches due to data exposure), and reputational damage. The local access requirement limits the attack surface but increases the risk from insider threats or attackers who have already gained limited access through other means. Organizations in sectors such as retail, manufacturing, and services that use this invoicing software are particularly vulnerable. The impact on availability could disrupt business continuity, while integrity compromises could affect accounting accuracy and audit trails, leading to compliance issues.

Organizations should immediately restrict local access to systems running filosoft Comerc.32, especially limiting permissions to trusted users only. Implement strict access controls and monitoring around the comeinst.exe process to detect anomalous behavior. Employ endpoint detection and response (EDR) solutions to identify suspicious code execution attempts. Regularly audit user privileges and remove unnecessary local accounts. Until a vendor patch is released, consider isolating affected systems from critical networks to reduce lateral movement risk. Engage with the software vendor for timely updates and apply patches as soon as they become available. Additionally, conduct user awareness training to mitigate insider threats and implement robust logging to support incident investigation if exploitation occurs.