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The US-CERT Current Activity web page is a regularly updated summary of the most frequent, high-impact types of security incidents currently being reported to the US-CERT.

Apple Releases Safari 5.0 and Safari 4.1

Apple has released Safari 5.0 and Safari 4.1 for Windows and Mac OS X to address multiple vulnerabilities in ColorSync, Safari, and WebKit. These vulnerabilities may allow an attacker to execute arbitrary code, cause a denial-of-service condition, obtain sensitive information, or conduct cross-site scripting attacks.

US-CERT encourages users and administrators to review Apple article HT4196 and apply any necessary updates to help mitigate the risks.

Adobe Releases Security Advisory for Flash Player, Reader, and Acrobat

Adobe has released a security advisory to notify users of a vulnerability in Adobe Flash Player, Reader, and Acrobat. Exploitation of this vulnerability may allow an attacker to execute arbitrary code and take control of the affected system. The advisory indicates that Adobe is aware of active exploitation of this vulnerability.

US-CERT encourages users and administrators to review Adobe security advisory APSA10-01 and apply any necessary workarounds until a fix is released by the vendor.

US-CERT will provide additional information as it becomes available.

Microsoft Releases Advance Notification for June Security Bulletin

Microsoft has issued a Security Bulletin Advance Notification, indicating that its June release will contain ten bulletins. Three of these bulletins will have the severity rating of critical and will be for Microsoft Windows and Internet Explorer. The remaining bulletins will have the severity rating of important and will be for Microsoft Windows, Microsoft Office, and Microsoft Sharepoint Services. Release of these bulletins is scheduled for Tuesday, June 8, 2010.

US-CERT will provide additional information as it becomes available.

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