Security Alert (A26-08-34): Multiple Vulnerabilities in Microsoft Products

Description:

Microsoft has released security updates to address multiple vulnerabilities in several Microsoft products or components. The list of security updates can be found at:
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55013
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55015
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63509
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65801
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69558
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69836
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69851
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70105

Affected Systems:

• Microsoft 365 Apps for Enterprise
• Microsoft Exchange Online
• Microsoft Office 2019, LTSC 2021, LTSC 2024, LTSC for Mac 2021, LTSC for Mac 2024, Office 365 for Mac
• Microsoft Word 2016
• Windows Remote Help
• Microsoft Entra ID
• Microsoft Fabric
• Microsoft Partner Center

For detailed information of the affected systems, please refer to the corresponding security advisories at vendor's website.

Impact:

Successful exploitation of the vulnerabilities could lead to remote code execution, denial of service, elevation of privilege, information disclosure or spoofing on an affected system.

Recommendation:

Patches for affected products are available from the Windows Update / Microsoft Update Catalog. Users of affected systems should follow the recommendations provided by the product vendor and take immediate actions to mitigate the risk.

More Information:

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55013
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55015
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63509
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65801
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69558
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69836
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69851
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70105
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-55013
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-55015
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-63509
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-65801
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-69558
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-69836
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-69851
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-70105