CVE-2007-0671
Actively exploited. CVE-2007-0671 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-08-12) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
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.
CSIRTS triage
- What
- A remote code execution vulnerability can be exploited by opening a specially crafted Excel file.
- Who is affected
- Users of Microsoft Office Excel.
- Urgency
- Remediation is urgent due to the critical nature of the vulnerability and confirmed exploitation.
- Action
- Apply the latest security updates for Microsoft Office Excel.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 99% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalexploitedCVE-2007-0671: Microsoft Office Excel Remote Code Execution Vulnerabilitycisa-kev · 2025-08-12
External references
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