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CVE-2011-1243

9.3 · HIGH

The Windows Messenger ActiveX control in msgsc.dll in Microsoft Windows XP SP2 and SP3 allows remote attackers to execute arbitrary code via unspecified vectors that "corrupt the system state," aka…

Published Apr 13, 2011microsoftCWE-119EPSS 29.32%

Overview

CVE-2011-1243 is a high-severity vulnerability affecting microsoft windows_xp. It was published on April 13, 2011 and has a CVSS 2.0 base score of 9.3 (HIGH).

This vulnerability has a CVSS 2.0 base score of 9.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The Windows Messenger ActiveX control in msgsc.dll in Microsoft Windows XP SP2 and SP3 allows remote attackers to execute arbitrary code via unspecified vectors that "corrupt the system state," aka "Microsoft Windows Messenger ActiveX Control Vulnerability."

Remediation

Check the references section for vendor advisories and patches from microsoft. Update windows_xp to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refosvdb.org/71788Refsecunia.com/advisories/44159Refwww.securityfocus.com/bid/47197Refdocs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-027Refoval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12524Refosvdb.org/71788Refsecunia.com/advisories/44159Refwww.securityfocus.com/bid/47197Refdocs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-027Refoval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12524

How CyberStrike helps

Frequently asked questions

What is CVE-2011-1243?

CVE-2011-1243 is a high-severity vulnerability affecting microsoft windows_xp. It was published on April 13, 2011 and has a CVSS 2.0 base score of 9.3 (HIGH).

How severe is CVE-2011-1243?

This vulnerability has a CVSS 2.0 base score of 9.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2011-1243?

Check the references section for vendor advisories and patches from microsoft. Update windows_xp to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-1243?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-1243 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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