SARA / Free Tools / KEV / CVE-2007-0671

CVE-2007-0671 on CISA KEV

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.

CISA KEV — Actively Exploited

Microsoft Office Excel Remote Code Execution Vulnerability

Vendor / Product
— / Microsoft / Office
Added to KEV
2025-08-12
BOD 22-01 due
2025-09-02
Ransomware use
Unknown
CVSS / EPSS
· EPSS 66.80%

01What CISA says about this vulnerability

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.

02Required action — verbatim from CISA

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

03Notes & references

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

VendorProductVersions
na / n/an/a

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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