CVE-2009-1542

critical Microsoft
CVSS v3 Base Score
9.0
AV:N/AC:L/Au:S/C:C/I:C/A:C
EPSS Score
18.0%
Exploitation probability in 30 days
Top 5% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Confidentiality
C
Integrity
C
Availability
C
Published: July 15, 2009 (6147 days ago)
Last Modified: April 23, 2026
Vendor: Microsoft
Source: NVD

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."

CWE

CWE-264

Affected Products

microsoft virtual pcmicrosoft virtual server

References

🔗 secunia.com 🔗 www.securitytracker.com 🔗 www.us-cert.gov 🔗 www.vupen.com 🔗 docs.microsoft.com