How severe is CVE-2006-2373?

CVE-2006-2373 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2006-2373 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 30% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-2373?

CVE-2006-2373 primarily affects Microsoft Windows 2000. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-2373?

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-2006-2373 published?

CVE-2006-2373 was published on 2006-06-13 and last updated on 2026-06-16.

CVE-2006-2373

CVE-2006-2373 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 30% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-264.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 30% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Microsoft Windows 2000
Published: 2006-06-13
Last modified: 2026-06-16

Description

The Server Message Block (SMB) driver (MRXSMB.SYS) in Microsoft Windows 2000 SP4, XP SP1 and SP2, and Server 2003 SP1 and earlier allows local users to execute arbitrary code by calling the MrxSmbCscIoctlOpenForCopyChunk function with the METHOD_NEITHER method flag and an arbitrary address, possibly for kernel memory, aka the "SMB Driver Elevation of Privilege Vulnerability."

Frequently asked questions

What is CVE-2006-2373?: The Server Message Block (SMB) driver (MRXSMB.SYS) in Microsoft Windows 2000 SP4, XP SP1 and SP2, and Server 2003 SP1 and earlier allows local users to execute arbitrary code by calling the MrxSmbCscIoctlOpenForCopyChunk function with the METHOD_NEITHER method flag and an arbitrary address, possibly for kernel memory, aka the "SMB Driver Elevation of Privilege Vulnerability."
How severe is CVE-2006-2373?: CVE-2006-2373 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2006-2373 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 30% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-2373?: CVE-2006-2373 primarily affects Microsoft Windows 2000. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-2373?: 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-2006-2373 published?: CVE-2006-2373 was published on 2006-06-13 and last updated on 2026-06-16.

References

Affected products (7)

cpe:2.3:o:microsoft:windows_2000:-:sp4:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2003:-:-:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2003:-:sp1:*:*:*:*:itanium:*
cpe:2.3:o:microsoft:windows_server_2003:-:sp1:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_xp:-:-:*:*:professional:*:x64:*
cpe:2.3:o:microsoft:windows_xp:-:sp1:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:*:*:*:*

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