Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since August 12, 2025.
CVE-2007-0671
Microsoft Office Excel Remote Code Execution Vulnerability
Added to KEV August 12, 2025
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2007-0671
- Affected products
- Office · Microsoft Office · Microsoft
What happened
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.
What it means for your business
Microsoft Office is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2007-0671). 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. CISA remediation due date: 2025-09-02. PremierePC tracks KEV alerts for Upstate SC businesses — patch or open a ticket if you need help verifying exposure.
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA due date: September 2, 2025
Sources
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