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high advisory

Multiple Vulnerabilities in Microsoft Office Products

Microsoft Office products contain multiple vulnerabilities that allow a remote attacker to achieve arbitrary code execution, privilege escalation, information disclosure, file manipulation, and perform cross-site scripting (XSS) attacks.

Microsoft has disclosed multiple vulnerabilities affecting its Office software suite. These security flaws permit a remote attacker to perform a range of malicious activities, including arbitrary code execution (ACE), privilege escalation, unauthorized file manipulation, information disclosure, and cross-site scripting (XSS). The breadth of these impacts highlights a high risk to organizational security across both Windows and macOS platforms. Given the ubiquity of the Microsoft Office suite, successful exploitation could lead to full workstation compromise, lateral movement, or data exfiltration. Defenders are urged to prioritize the application of security patches provided by Microsoft for all affected Office components to mitigate these risks.

Impact

Successful exploitation of these vulnerabilities allows unauthorized actors to gain elevated privileges, manipulate sensitive files, disclose confidential information, or execute arbitrary code on the host system. These weaknesses, particularly the capability for remote code execution, could facilitate large-scale compromises within organizations utilizing the software.

Recommendation

Prioritize the immediate application of Microsoft security updates across all endpoints running the affected Office software. Use internal vulnerability management tools to identify and track the patch status of all Microsoft Office installations.


Immediate actions

Deploy latest Microsoft security updates for all Office products

IT Operations 72h