Microsoft Office Excel Remote Code Execution Vulnerability
n/a — n/a
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.
8.8
42.1%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Published
- Feb 3, 2007
- Modified
- Jan 12, 2026
- Added to KEV
- Aug 12, 2025
- Federal patch due
- Sep 2, 2025
CISA 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.
Proof-of-concept & exploitation references
Weaponization
Public repositories whose name or description references CVE-2007-0671, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
No public GitHub repositories referencing CVE-2007-0671 were found at last check. Absence here is not proof no exploit exists - see the references below for vendor advisories and write-ups.
References
Frequently asked questions
What is CVE-2007-0671?
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.
How severe is CVE-2007-0671?
CVE-2007-0671 has a CVSS base score of 8.8 out of 10 (CVSS 3.1).
Is CVE-2007-0671 actively exploited in the wild?
Yes. CVE-2007-0671 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Aug 12, 2025, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2007-0671?
42.1% - meaning FIRST.org's EPSS model estimates a 42.1% probability this vulnerability will be exploited in the wild within 30 days (99% percentile among all scored CVEs).
Cross-checked against
Impactr finds and proves whether CVE-2007-0671 - or flaws like it - are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.
Join the waitlist