Microsoft Office Excel Remote Code Execution Vulnerability

Technical Severity

CVSS v3.1 Metrics

HIGH

8.8 / 10

Minimal Risk Critical

Vector Specification

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation Likelihood

EPSS Prediction

67.73 %

Predictive Probability

Percentile Rank

98.5 th

Documented as more likely to be exploited than 98.5% of known CVEs.

Detection Date

Aug 12, 2025

Remediation Due

Sep 02, 2025

CISA Catalog Active

Threat Analysis

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.

Remediation Directive

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

External Intelligence

https://learn.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-015

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2007-0671