CVE-2007-0671
HighExploitedPublic exploitUnspecified 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.
Published Feb 2, 2007 · Updated Apr 22, 2026
Key Facts
Patch immediately- CVE-2007-0671 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Access (Microsoft), Excel (Microsoft), Excel Viewer (Microsoft) and 11 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 21, 2013. Public exploit code is available.
- EPSS estimates a 43% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
43%
Higher than 98.7% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2007-0671 brief as a PDF
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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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Aug 12, 2025 | Sep 2, 2025 | Not reported |
| Industry KEV feed | Mar 21, 2013 | Sep 2, 2025 | Not reported |
| CIRCL KEV | Aug 12, 2025 | Sep 2, 2025 | Not reported |
| ENISA EUVD | Aug 12, 2025 | n/a | Not reported |
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.
Affected Products
34 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| AccessMicrosoft | 2000, 2002, 2003 | n/a |
| ExcelMicrosoft | 2000, 2002, 2003 | n/a |
| Excel ViewerMicrosoft | 2003 | n/a |
| FrontpageMicrosoft | 2000, 2002, 2003 | n/a |
| InfopathMicrosoft | 2003 | n/a |
Timeline
Publicly disclosed
Feb 2, 2007
Added to Industry KEV feed
Mar 21, 2013
Added to CISA KEV
Aug 12, 2025
Added to CIRCL KEV
Aug 12, 2025
Added to ENISA EUVD
Aug 12, 2025
Last updated
Apr 22, 2026
References
- advisoryMS07-015
- advisory24008
- advisoryoffice-unspecified-code-execution(32178)
- advisoryhttps://learn.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-015
- advisoryhttp://www.microsoft.com/technet/security/advisory/932553.mspx
FAQ
Common Questions.
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: Access (Microsoft) versions 2000, 2002, 2003; Excel (Microsoft) versions 2000, 2002, 2003; Excel Viewer (Microsoft) versions 2003, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 21, 2013.
Yes. It was added on Aug 12, 2025 with a federal remediation due date of Sep 2, 2025.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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