CVE-2007-0671
Microsoft Office Excel Remote Code Execution Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 2 September 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 43.24% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 12 August 2025 · due 2 September 2025
- Affected
- microsoft/access · microsoft/excel · microsoft/excel viewer · microsoft/frontpage · microsoft/infopath · microsoft/office · microsoft/onenote · microsoft/outlook · microsoft/powerpoint · microsoft/project · microsoft/publisher · microsoft/visio · microsoft/word · microsoft/word viewer
- Source
- secure@microsoft.com
EPSS 43.2% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://learn.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-015 ; https://nvd.nist.gov/vuln/detail/CVE-2007-0671
References
- http://osvdb.org/31901Broken Link
- http://secunia.com/advisories/24008Broken Link, Vendor Advisory
- http://securitytracker.com/id?1017584Broken Link
- http://vil.nai.com/vil/content/v_141393.htmBroken Link
- http://www.avertlabs.com/research/blog/?p=191Broken Link
- http://www.kb.cert.org/vuls/id/613740US Government Resource
- http://www.microsoft.com/technet/security/advisory/932553.mspxBroken Link, Vendor Advisory
- http://www.securityfocus.com/bid/22383Broken Link
- http://www.us-cert.gov/cas/techalerts/TA07-044A.htmlBroken Link, US Government Resource
- http://www.vupen.com/english/advisories/2007/0463Vendor Advisory
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-015Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/32178Third Party Advisory
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A301Broken Link
- http://osvdb.org/31901Broken Link
- http://secunia.com/advisories/24008Broken Link, Vendor Advisory
- http://securitytracker.com/id?1017584Broken Link
- http://vil.nai.com/vil/content/v_141393.htmBroken Link
- http://www.avertlabs.com/research/blog/?p=191Broken Link
- http://www.kb.cert.org/vuls/id/613740US Government Resource
- http://www.microsoft.com/technet/security/advisory/932553.mspxBroken Link, Vendor Advisory
- http://www.securityfocus.com/bid/22383Broken Link
- http://www.us-cert.gov/cas/techalerts/TA07-044A.htmlBroken Link, US Government Resource
- http://www.vupen.com/english/advisories/2007/0463Vendor Advisory
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-015Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/32178Third Party Advisory
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A301Broken Link
- https://learn.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-015Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2007-0671US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.