How severe is CVE-2010-1734?

CVE-2010-1734 has a CVSS 2.0 base score of 4.9, rated medium severity.

Is CVE-2010-1734 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-1734?

CVE-2010-1734 primarily affects Microsoft Windows 2000. In total, 55 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-1734?

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

When was CVE-2010-1734 published?

CVE-2010-1734 was published on 2010-05-06 and last updated on 2026-06-16.

CVE-2010-1734

CVE-2010-1734 is a medium-severity vulnerability in Microsoft Windows 2000 with a CVSS 2.0 base score of 4.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 4.9)
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Microsoft Windows 2000
Published: 2010-05-06
Last modified: 2026-06-16

Description

The SfnINSTRING function in win32k.sys in the kernel in Microsoft Windows 2000, XP, and Server 2003 allows local users to cause a denial of service (system crash) via a 0x18d value in the second argument (aka the Msg argument) of a PostMessage function call for the DDEMLEvent window.

Frequently asked questions

What is CVE-2010-1734?: The SfnINSTRING function in win32k.sys in the kernel in Microsoft Windows 2000, XP, and Server 2003 allows local users to cause a denial of service (system crash) via a 0x18d value in the second argument (aka the Msg argument) of a PostMessage function call for the DDEMLEvent window.
How severe is CVE-2010-1734?: CVE-2010-1734 has a CVSS 2.0 base score of 4.9, rated medium severity.
Is CVE-2010-1734 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-1734?: CVE-2010-1734 primarily affects Microsoft Windows 2000. In total, 55 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-1734?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-1734 published?: CVE-2010-1734 was published on 2010-05-06 and last updated on 2026-06-16.

References

Affected products (55)

cpe:2.3:o:microsoft:windows_2000:*:-:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2000:*:beta3:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2000:*:gold:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2000:*:rc1:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2000:*:rc2:*:*:*:*:*:*
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_2000:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2003_server:*:gold:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2003_server:*:gold:itanium:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2003_server:*:gold:x64:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2003_server:*:r2:x64:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2003_server:*:sp1:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2003_server:*:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2003_server:*:sp2:itanium:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2003:*:-:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2003:*:sp1:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2003:*:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:*:x86:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:gold:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:gold:embedded:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:gold:media_center:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:gold:professional:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:gold:tablet_pc:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:sp1:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:sp1:embedded:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:sp1:media_center:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:sp1:professional:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:sp1:tablet_pc:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:sp2:embedded:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:sp2:media_center:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:sp2:professional:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:sp2:tablet_pc:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:sp2:x86:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:sp3:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:sp3:x86:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:-:*:*:*:*:*:*:*

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