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Actively exploited · Published Feb 3, 2007 · Assigned by microsoft

CVE-2007-0671

High 8.8 Exploited

In plain English

A high-severity security flaw in Office from Microsoft. Attackers are actively exploiting it in the wild (listed by CISA on August 12, 2025). The chance it is exploited in the next 30 days is estimated at 44.1% (higher than 99% of all known vulnerabilities). Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Severity (CVSS 3.1)8.8High
Exploit odds (30 days)44.1%top 1.2% of all CVEs
Exploited in the wildYesCISA KEV since Aug 12, 2025
Attack toolingNoneno public tooling known

CISA guidance

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

Federal agencies must remediate by Sep 2, 2025.

Official description

Unspecified vulnerability in Microsoft Excel 2000, XP, 2003, and 2004 for Mac, and possibly other Office products, allows remote user-assisted attackers to execute arbitrary code via unknown attack vectors, as demonstrated by Exploit-MSExcel.h in targeted zero-day attacks.

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References