How severe is CVE-2011-1974?

CVE-2011-1974 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-2011-1974 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-1974?

CVE-2011-1974 primarily affects Microsoft Windows 2003 Server. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-1974?

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-2011-1974 published?

CVE-2011-1974 was published on 2011-08-10 and last updated on 2026-06-16.

CVE-2011-1974

CVE-2011-1974 is a high-severity vulnerability in Microsoft Windows 2003 Server with a CVSS 2.0 base score of 7.2. 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: High (CVSS 2.0 base score 7.2)
EPSS exploit prediction: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Microsoft Windows 2003 Server
Published: 2011-08-10
Last modified: 2026-06-16

Description

NDISTAPI.sys in the NDISTAPI driver in Remote Access Service (RAS) in Microsoft Windows XP SP2 and SP3 and Windows Server 2003 SP2 does not properly validate user-mode input, which allows local users to gain privileges via a crafted application, aka "NDISTAPI Elevation of Privilege Vulnerability."

Frequently asked questions

What is CVE-2011-1974?: NDISTAPI.sys in the NDISTAPI driver in Remote Access Service (RAS) in Microsoft Windows XP SP2 and SP3 and Windows Server 2003 SP2 does not properly validate user-mode input, which allows local users to gain privileges via a crafted application, aka "NDISTAPI Elevation of Privilege Vulnerability."
How severe is CVE-2011-1974?: CVE-2011-1974 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-2011-1974 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-1974?: CVE-2011-1974 primarily affects Microsoft Windows 2003 Server. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-1974?: 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-2011-1974 published?: CVE-2011-1974 was published on 2011-08-10 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:o:microsoft:windows_2003_server:*:sp2:*:*:*:*:*:*
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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