Microsoft Office Excel Remote Code Execution
What to do
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 deadline 2025-09-02 · passed 1 year ago · applies to US federal civilian agencies; used elsewhere as a reference SLA
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.
Who is affected
Microsoft Office. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.
Timeline
- Added to CISA KEVExploitation in the wild confirmed by CISA
- CISA remediation deadlinepassed 1 year ago
Sources
- NVD entry for CVE-2007-0671 nvd.nist.gov/vuln/detail/CVE-2007-0671
- CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
- learn.microsoft.com learn.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-015
- nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2007-0671