Vulnerability Monitor

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CVE-2009-1542

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."

Security Impact Summary

CVE-2009-1542 is a security vulnerability that . Impacting 2 products from microsoft, from microsoft organizations running these solutions should prioritize assessment and patching.

Historical Context

Originally identified in 2009, this vulnerability predates many modern security frameworks and practices. The vulnerability landscape of that era was characterized by different threat models and less mature defense mechanisms compared to contemporary standards.

Published

2009-07-15T15:30:01.420

Last Modified

2026-04-23T00:35:47.467

Status

Modified

Source

[email protected]

Severity

CVSSv2: 9.0 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Access Vector: NETWORK
Access Complexity: LOW
Authentication: SINGLE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

8.0

Impact Score

10.0

Weaknesses

Type: Primary
CWE-264

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	microsoft	virtual_pc	2004	Yes
Application	microsoft	virtual_pc	2007	Yes
Application	microsoft	virtual_pc	2007	Yes
Application	microsoft	virtual_pc	2007	Yes
Application	microsoft	virtual_server	2005	Yes
Application	microsoft	virtual_server	2005	Yes

References

http://secunia.com/advisories/35808 ([email protected])
http://www.securitytracker.com/id?1022544 ([email protected])
http://www.us-cert.gov/cas/techalerts/TA09-195A.html US Government Resource ([email protected])
http://www.vupen.com/english/advisories/2009/1890 ([email protected])
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-033 ([email protected])
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6166 ([email protected])
http://secunia.com/advisories/35808 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id?1022544 (af854a3a-2127-422b-91ae-364da2661108)
http://www.us-cert.gov/cas/techalerts/TA09-195A.html US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2009/1890 (af854a3a-2127-422b-91ae-364da2661108)
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-033 (af854a3a-2127-422b-91ae-364da2661108)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6166 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For microsoft's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.