How severe is CVE-2005-0050?

CVE-2005-0050 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2005-0050 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 47% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-0050?

CVE-2005-0050 primarily affects Microsoft Windows 2000. In total, 37 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2005-0050?

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

When was CVE-2005-0050 published?

CVE-2005-0050 was published on 2005-05-02 and last updated on 2026-06-16.

CVE-2005-0050

CVE-2005-0050 is a critical-severity vulnerability in Microsoft Windows 2000 with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 47% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 47% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Microsoft Windows 2000
Published: 2005-05-02
Last modified: 2026-06-16

Description

The License Logging service for Windows NT Server, Windows 2000 Server, and Windows Server 2003 does not properly validate the length of messages, which leads to an "unchecked buffer" and allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code, aka the "License Logging Service Vulnerability."

Frequently asked questions

What is CVE-2005-0050?: The License Logging service for Windows NT Server, Windows 2000 Server, and Windows Server 2003 does not properly validate the length of messages, which leads to an "unchecked buffer" and allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code, aka the "License Logging Service Vulnerability."
How severe is CVE-2005-0050?: CVE-2005-0050 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2005-0050 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 47% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-0050?: CVE-2005-0050 primarily affects Microsoft Windows 2000. In total, 37 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2005-0050?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2005-0050 published?: CVE-2005-0050 was published on 2005-05-02 and last updated on 2026-06-16.

References

Affected products (37)

cpe:2.3:o:microsoft:windows_2000:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2000:*:sp1:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2000:*:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2000:*:sp3:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2000:*:sp4:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2003_server:2000:*:small_business_server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2003_server:2003:*:small_business_server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2003_server:enterprise:*:64-bit:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2003_server:enterprise_64-bit:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2003_server:r2:*:64-bit:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2003_server:r2:*:datacenter_64-bit:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2003_server:standard:*:64-bit:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2003_server:web:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:*:enterprise_server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:*:server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:*:terminal_server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp1:enterprise_server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp1:server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp1:terminal_server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp2:enterprise_server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp2:server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp2:terminal_server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp3:enterprise_server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp3:server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp3:terminal_server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp4:enterprise_server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp4:server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp4:terminal_server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp5:enterprise_server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp5:server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp5:terminal_server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp6:enterprise_server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp6:server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp6:terminal_server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp6a:enterprise_server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp6a:server:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:sp6a:terminal_server:*:*:*:*:*

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