How severe is CVE-1999-1593?

CVE-1999-1593 has a CVSS 2.0 base score of 7.6, rated high severity.

Is CVE-1999-1593 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-1593?

CVE-1999-1593 primarily affects Microsoft Windows 2000. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-1593?

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-1999-1593 published?

CVE-1999-1593 was published on 2009-01-15 and last updated on 2026-06-16.

CVE-1999-1593

CVE-1999-1593 is a high-severity vulnerability in Microsoft Windows 2000 with a CVSS 2.0 base score of 7.6. Its EPSS exploit-prediction score of 18% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-59.

Key facts

Severity: High (CVSS 2.0 base score 7.6)
EPSS exploit prediction: 18% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-59
Affected product: Microsoft Windows 2000
Published: 2009-01-15
Last modified: 2026-06-16

Description

Windows Internet Naming Service (WINS) allows remote attackers to cause a denial of service (connectivity loss) or steal credentials via a 1Ch registration that causes WINS to change the domain controller to point to a malicious server. NOTE: this problem may be limited when Windows 95/98 clients are used, or if the primary domain controller becomes unavailable.

Frequently asked questions

What is CVE-1999-1593?: Windows Internet Naming Service (WINS) allows remote attackers to cause a denial of service (connectivity loss) or steal credentials via a 1Ch registration that causes WINS to change the domain controller to point to a malicious server. NOTE: this problem may be limited when Windows 95/98 clients are used, or if the primary domain controller becomes unavailable.
How severe is CVE-1999-1593?: CVE-1999-1593 has a CVSS 2.0 base score of 7.6, rated high severity.
Is CVE-1999-1593 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-1593?: CVE-1999-1593 primarily affects Microsoft Windows 2000. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-1593?: 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-1999-1593 published?: CVE-1999-1593 was published on 2009-01-15 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:o:microsoft:windows_2000:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_95:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_98:-:*:*:*:*:*:*:*

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