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."

Category

9.0
CVSS
Severity: Critical
CVSS 2.0 •
EPSS 18.62% Top 10%
Vendor Advisory microsoft.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.vupen.com/english/advisories/2009/1890 vdb entry
http://secunia.com/advisories/35808 third party advisory
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-033 vendor advisory
http://www.securitytracker.com/id?1022544 vdb entry
http://www.us-cert.gov/cas/techalerts/TA09-195A.html third party advisory us government resource
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6166 vdb entry signature

Frequently Asked Questions

What is the severity of CVE-2009-1542?
CVE-2009-1542 has been scored as a critical severity vulnerability.
How to fix CVE-2009-1542?
To fix CVE-2009-1542, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-1542 being actively exploited in the wild?
It is possible that CVE-2009-1542 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~19% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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