CVE-2024-30102 is a use-after-free vulnerability (CWE-416) identified in Microsoft 365 Apps for Enterprise, specifically affecting version 16.0.1. This vulnerability arises when the application improperly manages memory, freeing an object while it is still in use, which can lead to arbitrary code execution. An attacker with limited privileges (PR:L) can exploit this vulnerability but requires user interaction (UI:R), such as convincing a user to open a malicious document or perform a specific action within the application. The vulnerability affects confidentiality, integrity, and availability (all rated high), meaning successful exploitation could allow an attacker to execute arbitrary code with the privileges of the affected user, potentially leading to full system compromise. The attack vector is local (AV:L), meaning the attacker must have some level of access to the target system. The vulnerability is unexploited in the wild as of now, but the presence of a public CVE and detailed technical information increases the risk of future exploitation. Microsoft has not yet released a patch, but organizations are advised to prepare for immediate remediation. The vulnerability is particularly critical due to the widespread use of Microsoft 365 Apps in enterprise environments, making it a valuable target for attackers aiming to gain footholds in corporate networks.

For European organizations, the impact of CVE-2024-30102 is significant due to the extensive adoption of Microsoft 365 Apps for Enterprise across public and private sectors. Successful exploitation could lead to remote code execution, allowing attackers to steal sensitive data, disrupt business operations, or deploy ransomware and other malware. The vulnerability’s requirement for local access and user interaction somewhat limits its exploitation scope but does not eliminate risk, especially in environments with phishing or social engineering threats. Organizations handling sensitive personal data under GDPR face additional compliance risks if this vulnerability is exploited. The potential for lateral movement within networks after initial compromise increases the threat to critical infrastructure and key industries such as finance, healthcare, and government. The absence of known exploits in the wild provides a window for proactive defense, but the high severity score demands urgent attention to prevent future attacks.

1. Monitor Microsoft security advisories closely and apply patches immediately once released to address CVE-2024-30102. 2. Until patches are available, implement application control policies to restrict execution of untrusted documents or macros within Microsoft 365 Apps. 3. Enforce the principle of least privilege by limiting user permissions and avoiding administrative privileges for routine tasks. 4. Enhance endpoint detection and response (EDR) capabilities to identify suspicious behaviors indicative of use-after-free exploitation attempts. 5. Conduct targeted user awareness training focusing on phishing and social engineering tactics that could trigger the vulnerability. 6. Utilize network segmentation to contain potential breaches and limit lateral movement if exploitation occurs. 7. Employ advanced threat protection solutions that can sandbox and analyze suspicious Office documents before they reach end users. 8. Regularly audit and update security configurations related to Microsoft 365 Apps to minimize attack surface.