How severe is CVE-2007-0671?

CVE-2007-0671 has a CVSS 3.1 base score of 8.8 (HIGH). EPSS estimates a 43.2% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2007-0671: Microsoft Office Excel Remote Code Execution

CISA Known Exploited Vulnerabilities

Microsoft Office Excel Remote Code Execution Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2025-08-12

Remediation due

2025-09-02

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

CISA notes
https://learn.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-015 ; https://nvd.nist.gov/vuln/detail/CVE-2007-0671

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.

Severity

CVSS 3.1 · CISA8.8 HIGH

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

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
-	-	n/a

References

13 Links

Vendor advisories

MS07-015

Third-party advisories

Vulnerability databases

Other references

Record Details

Published

2007-02-03

Last updated

2026-01-12

Assigner (CNA)

microsoft

Credited to

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.