High Threat Security Alert (A23-09-08): Multiple Vulnerabilities in Microsoft Products (September 2023)
13 September 2023
Microsoft has released security updates addressing multiple vulnerabilities which affect several Microsoft products or components. The list of security updates can be found at: https://msrc.microsoft.com/update-guide/releaseNote/2023-Sep
Reports indicated that the vulnerabilities (CVE-2023-4863, CVE-2023-36761 and CVE-2023-36802) in Microsoft Windows and Server, Microsoft Edge, as well as Microsoft Office, Word and 365 Apps are being exploited in the wild and the technical details of the information disclosure vulnerability (CVE-2023-36761) were publicly disclosed. System administrators and users are advised to take immediate action to patch your affected systems to mitigate the elevated risk of cyber attacks.
Microsoft Windows 10, 11
Microsoft Windows Server 2008, 2008 R2, 2012, 2012 R2, 2016, 2019, 2022
Microsoft Exchange Server 2016, 2019
Microsoft Edge prior to version 116.0.1938.81
Microsoft Office 2013, 2013 RT, 2016, 2019, 2019 for Mac, LTSC 2021, LTSC for Mac 2021
Microsoft Office Online Server
Microsoft Excel 2013, 2013 RT, 2016
Microsoft Word 2013, 2013 RT, 2016
Microsoft Outlook 2016
Microsoft SharePoint Enterprise Server 2016
Microsoft SharePoint Server 2019, Subscription Edition
Microsoft 365 Apps for Enterprise
Microsoft Dynamics 365 (on-premises) version 9.0, version 9.1
Depending on the vulnerability exploited, a successful attack could lead to remote code execution, denial of service, elevation of privilege, information disclosure, security feature bypass and spoofing.
Patches for affected products are available from the Windows Update / Microsoft Update Catalog. System administrators and users of affected systems should follow the recommendations provided by the product vendor and take immediate actions to mitigate the risk.