Risk Letters

Exploited vulnerability

CVE-2007-0671

TLP:CLEAR

Microsoft Office Excel Remote Code Execution Vulnerability

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.

Facts

  • Vendor: Microsoft
  • Product: Office
  • CVSS: 8.8
  • EPSS (probability of exploitation within 30 days): 44.1 %
  • On CISA's Known Exploited Vulnerabilities list since: 12 August 2025
  • First known exploitation: 12 August 2025
  • CISA's deadline for US federal agencies: 2 September 2025
  • First seen by Risk Letters: 12 August 2025

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD