CVEs / CVE-2007-0671
CVE-2007-0671: Microsoft Office Excel Remote Code Execution Vulnerability
- Known exploited in the CISA KEV catalog since 12 Aug 2025
- high 9.3 CVSS 2.0 (NVD)
- EPSS 43.2% chance of exploitation in the next 30 days, higher than 98% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Microsoft Office Excel contains a remote code execution vulnerability that can be exploited when a specially crafted Excel file is opened. This malicious file could be delivered as an email attachment or hosted on a malicious website. An attacker could leverage this vulnerability by creating a specially crafted Excel file, which, when opened, allowing an attacker to execute remote code on the affected system.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| n/a n/a | n/a | — |
Exploitation
| In CISA KEV since | 12 Aug 2025 |
|---|---|
| Due date for US federal agencies | 2 Sep 2025 |
| Used in ransomware campaigns | Unknown |
| 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. |
Severity
| CVSS 2.0 | 9.3 highAV:N/AC:M/Au:N/C:C/I:C/A:CScored by NVD |
|---|
References
- CVE-2007-0671 on NVD
- CVE-2007-0671 in the CISA KEV catalog
- https://learn.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-015 (cited by CISA)
- http://osvdb.org/31901 Broken Link
- http://secunia.com/advisories/24008 Broken Link, Vendor Advisory
- http://securitytracker.com/id?1017584 Broken Link
- http://vil.nai.com/vil/content/v_141393.htm Broken Link
- http://www.avertlabs.com/research/blog/?p=191 Broken Link
- http://www.kb.cert.org/vuls/id/613740 US Government Resource
- http://www.microsoft.com/technet/security/advisory/932553.mspx Broken Link, Vendor Advisory
- http://www.securityfocus.com/bid/22383 Broken Link
- http://www.us-cert.gov/cas/techalerts/TA07-044A.html Broken Link, US Government Resource
- http://www.vupen.com/english/advisories/2007/0463 Vendor Advisory
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-015 Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/32178 Third Party Advisory
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A301 Broken Link
- https://learn.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-015 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2007-0671 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.