How severe is CVE-1999-0506?

CVE-1999-0506 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-1999-0506 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 17% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0506?

CVE-1999-0506 primarily affects Microsoft Windows 2000. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0506?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-1999-0506 published?

CVE-1999-0506 was published on 1998-10-01 and last updated on 2026-06-16.

CVE-1999-0506

CVE-1999-0506 is a high-severity vulnerability in Microsoft Windows 2000 with a CVSS 2.0 base score of 7.2. Its EPSS exploit-prediction score of 17% places it in the 97th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: High (CVSS 2.0 base score 7.2)
EPSS exploit prediction: 17% (97th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Windows 2000
Published: 1998-10-01
Last modified: 2026-06-16

Description

A Windows NT domain user or administrator account has a default, null, blank, or missing password.

Frequently asked questions

What is CVE-1999-0506?: A Windows NT domain user or administrator account has a default, null, blank, or missing password.
How severe is CVE-1999-0506?: CVE-1999-0506 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-1999-0506 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 17% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0506?: CVE-1999-0506 primarily affects Microsoft Windows 2000. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0506?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-1999-0506 published?: CVE-1999-0506 was published on 1998-10-01 and last updated on 2026-06-16.

References

https://www.cve.org/CVERecord?id=CVE-1999-0506

Affected products (2)

cpe:2.3:o:microsoft:windows_2000:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:*:*:*:*:*:*:*:*

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