Unrated severityNVD Advisory· Published Jul 15, 2009· Updated Jun 16, 2026
CVE-2009-1542
CVE-2009-1542
Description
The Virtual Machine Monitor (VMM) in Microsoft Virtual PC 2004 SP1, 2007, and 2007 SP1, and Microsoft Virtual Server 2005 R2 SP1, does not enforce CPU privilege-level requirements for all machine instructions, which allows guest OS users to execute arbitrary kernel-mode code and gain privileges within the guest OS via a crafted application, aka "Virtual PC and Virtual Server Privileged Instruction Decoding Vulnerability."
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
8cpe:2.3:a:microsoft:virtual_pc:2004:sp1:*:*:*:*:*:*+ 4 more
- cpe:2.3:a:microsoft:virtual_pc:2004:sp1:*:*:*:*:*:*
- cpe:2.3:a:microsoft:virtual_pc:2007:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:virtual_pc:2007:sp1:*:*:*:*:*:*
- cpe:2.3:a:microsoft:virtual_pc:2007:*:x64:*:*:*:*:*
- (no CPE)range: 2004 SP1, 2007, 2007 SP1
cpe:2.3:a:microsoft:virtual_server:2005:r2_sp1:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:microsoft:virtual_server:2005:r2_sp1:*:*:*:*:*:*
- cpe:2.3:a:microsoft:virtual_server:2005:r2_sp1:x64:*:*:*:*:*
- (no CPE)range: 2005 R2 SP1
Patches
Vulnerability mechanics
References
6- www.us-cert.gov/cas/techalerts/TA09-195A.htmlnvdUS Government Resource
- secunia.com/advisories/35808nvd
- www.securitytracker.com/idnvd
- www.vupen.com/english/advisories/2009/1890nvd
- docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-033nvd
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6166nvd
News mentions
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