How severe is CVE-2001-0003?

CVE-2001-0003 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2001-0003 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-0003?

CVE-2001-0003 primarily affects Microsoft Office. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2001-0003?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2001-0003 published?

CVE-2001-0003 was published on 2001-02-12 and last updated on 2026-06-16.

CVE-2001-0003

CVE-2001-0003 is a medium-severity vulnerability in Microsoft Office with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Office
Published: 2001-02-12
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2001-0003?: 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.
How severe is CVE-2001-0003?: CVE-2001-0003 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2001-0003 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-0003?: CVE-2001-0003 primarily affects Microsoft Office. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2001-0003?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2001-0003 published?: CVE-2001-0003 was published on 2001-02-12 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:microsoft:office:2000:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2000:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_me:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:*:*:*:*:*:*:*:*

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