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CVE-2011-1991

• Severity: critical (CVSS 9.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 12.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2011-09-15 · updated 2026-06-16

Description

Multiple untrusted search path vulnerabilities in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allow local users to gain privileges via a Trojan horse DLL in the current working directory, as demonstrated by a directory that contains a .doc, .rtf, or .txt file, related to (1) deskpan.dll in the Display Panning CPL Extension, (2) EAPHost Authenticator Service, (3) Folder Redirection, (4) HyperTerminal, (5) the Japanese Input Method Editor (IME), and (6) Microsoft Management Console (MMC), aka "Windows Components Insecure Library Loading Vulnerability."

Affected products

• Microsoft Windows 2003 Server: all versions
• Microsoft Windows 7: all versions
• Microsoft Windows Server 2003: all versions
• Microsoft Windows Server 2008: r2
• Microsoft Windows Vista: all versions
• Microsoft Windows XP Service Pack 3: all versions

References

• http://www.us-cert.gov/cas/techalerts/TA11-256A.html
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-071
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12871
• http://www.us-cert.gov/cas/techalerts/TA11-256A.html
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-071
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12871

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