CVE-2010-3966

CVE-2010-3966 is a critical-severity vulnerability in Microsoft Windows 7 with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 13% places it in the 96th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

Untrusted search path vulnerability in Microsoft Windows Server 2008 R2 and Windows 7, when BranchCache is supported, allows local users to gain privileges via a Trojan horse DLL in the current working directory, as demonstrated by a directory that contains an EML file, an RSS file, or a WPOST file, aka "BranchCache Insecure Library Loading Vulnerability."

Frequently asked questions

What is CVE-2010-3966?
Untrusted search path vulnerability in Microsoft Windows Server 2008 R2 and Windows 7, when BranchCache is supported, allows local users to gain privileges via a Trojan horse DLL in the current working directory, as demonstrated by a directory that contains an EML file, an RSS file, or a WPOST file, aka "BranchCache Insecure Library Loading Vulnerability."
How severe is CVE-2010-3966?
CVE-2010-3966 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2010-3966 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-3966?
CVE-2010-3966 primarily affects Microsoft Windows 7. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-3966?
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-2010-3966 published?
CVE-2010-3966 was published on 2010-12-16 and last updated on 2026-06-16.

References

Affected products (3)

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