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Microsoft Office Excel Remote Code Execution Vulnerability

CISA lists this Microsoft vulnerability as known exploited. Its MSRC release detail is outside this installation's collected history.

CISA catalog record

Microsoft Office Excel contains a remote code execution vulnerability that can be exploited when a specially crafted Excel file is opened. This malicious file could be delivered as an email attachment or hosted on a malicious website. An attacker could leverage this vulnerability by creating a specially crafted Excel file, which, when opened, allowing an attacker to execute remote code on the affected system.

Product
Office
Added to KEV
12 Aug 2025
Federal remediation due
2 Sep 2025
Known ransomware use
Not reported
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