Home/CVE/Web Extender Client (WEC) in Microsoft Office 2000, Windows 2000, and Windows Me does not properly process Internet Expl
CVE

CVE-2001-0003

Web Extender Client (WEC) in Microsoft Office 2000, Windows 2000, and Windows Me does not properly process Internet Expl

Web Extender Client (WEC) in Microsoft Office 2000, Windows 2000, and Windows Me does not properly process Internet Explorer security settings for NTLM authentication, which allows attackers to obtain NTLM credentials and possibly obtain the password, aka the "Web Client NTLM Authentication" vulnerability.

MEDIUM · CVSS 5 EPSS 0.28716
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  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 3% of all CVEs by exploitation likelihood
Sigma rules9 YARA rules0
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Affected Products & Versions

4
microsoft officeall versions
microsoft windows 2000all versions
microsoft windows meall versions
microsoft windows ntall versions
◈

Sigma Hunt Rules

9
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSuspicious Microsoft Office Child Process - MacOS
producthighCode Executed Via Office Add-in XLL File
producthighPotential Persistence Via Microsoft Office Add-In
producthighPotential Persistence Via Microsoft Office Startup Folder
producthighFile With Uncommon Extension Created By An Office Application
producthighOffice Macro File Creation From Suspicious Process
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Scoring & Timeline

5
MEDIUM · CVSS v2 (legacy) · cve@mitre.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:L/Au:N/C:P/I:N/A:N
Published to NVD12 Feb 2001 · 05:00 AM
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References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securityfocus.com/bid/2199PatchVendor Advisory
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-001
https://exchange.xforce.ibmcloud.com/vulnerabilities/5920
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