How severe is CVE-2010-1891?

CVE-2010-1891 has a CVSS 2.0 base score of 6.9, rated medium severity.

Is CVE-2010-1891 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-1891?

CVE-2010-1891 primarily affects Microsoft Windows Server 2003. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-1891?

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

When was CVE-2010-1891 published?

CVE-2010-1891 was published on 2010-09-15 and last updated on 2026-06-16.

CVE-2010-1891

CVE-2010-1891 is a medium-severity vulnerability in Microsoft Windows Server 2003 with a CVSS 2.0 base score of 6.9. 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-264.

Key facts

Severity: Medium (CVSS 2.0 base score 6.9)
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Microsoft Windows Server 2003
Published: 2010-09-15
Last modified: 2026-06-16

Description

The Client/Server Runtime Subsystem (aka CSRSS) in the Win32 subsystem in Microsoft Windows XP SP2 and SP3 and Server 2003 SP2, when a Chinese, Japanese, or Korean locale is enabled, does not properly allocate memory for transactions, which allows local users to gain privileges via a crafted application, aka "CSRSS Local Elevation of Privilege Vulnerability."

Frequently asked questions

What is CVE-2010-1891?: The Client/Server Runtime Subsystem (aka CSRSS) in the Win32 subsystem in Microsoft Windows XP SP2 and SP3 and Server 2003 SP2, when a Chinese, Japanese, or Korean locale is enabled, does not properly allocate memory for transactions, which allows local users to gain privileges via a crafted application, aka "CSRSS Local Elevation of Privilege Vulnerability."
How severe is CVE-2010-1891?: CVE-2010-1891 has a CVSS 2.0 base score of 6.9, rated medium severity.
Is CVE-2010-1891 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-1891?: CVE-2010-1891 primarily affects Microsoft Windows Server 2003. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-1891?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-1891 published?: CVE-2010-1891 was published on 2010-09-15 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:o:microsoft:windows_server_2003:*:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:sp3:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:-:sp2:x64:*:*:*:*:*

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