CVE-2007-0671: Microsoft Office Excel Remote Code Execution Vulnerability
Vulnerability summary
CVE-2007-0671 is a high (CVSS 9.3) vulnerability in Microsoft Office. It is known to be exploited: CISA lists it, first on 12-08-2025. EPSS estimates a 43.24% chance of exploitation in the next 30 days, higher than 98.7% of scored vulnerabilities.
Timeline
- 03-02-2007PublishedVulnerability first disclosed.
- 12-08-2025Added to CISA KEVMicrosoft Office Excel Remote Code Execution Vulnerability
- 02-09-2025CISA remediation dueApply mitigations per vendor instructions.
- 12-01-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
43.24%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
0.00 pp
From 43.24% on 20-09-2026
Known exploited
Compare KEV catalogs
CISA KEVListed- Added
- 12-08-2025
- Federal due date
- 02-09-2025
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. learn.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-015 nvd.nist.gov/vuln/detail/CVE-2007-0671
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Microsoft14 products
- access2000 | 2002 | 2003
- excel2000 | 2002 | 2003
- excel_viewer2003
- frontpage2000 | 2002 | 2003
- infopath2003
1 vendor · 14 products
References
15 links- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A301VDB EntrySignatureX Refsource OVALBroken Link
www.microsoft.com/technet/security/advisory/932553.mspxX Refsource CONFIRMBroken LinkVendor Advisory- www.us-cert.gov/cas/techalerts/TA07-044A.htmlThird Party AdvisoryX Refsource CERTBroken LinkUS Government Resource
- docs.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-015Vendor AdvisoryX Refsource MS
Show all 15 references
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2007-0671Government ResourceUS Government Resource