JPCERT-AT-2026-0022
                                                             JPCERT/CC
                                                            2026-08-12

                 <<< JPCERT/CC Alert 2026-08-12 >>>

         Microsoft Releases August 2026 Security Updates

       https://www.jpcert.or.jp/english/at/2026/at260022.html


I. Overview
Microsoft has released August 2026 Security Updates to address the
vulnerabilities in their products. Attackers leveraging these
vulnerabilities may be able to execute arbitrary code remotely
without authentication or elevate privileges locally after
authentication, etc.

    Microsoft Corporation
    August 2026 Security Updates
    https://msrc.microsoft.com/update-guide/en-US/releaseNote/2026-Aug

According to Microsoft, among the vulnerabilities, the following
vulnerability has been confirmed to be exploited in the wild. Please
refer to the latest information provided by Microsoft and implement
the measures described in "II. Solution."

    CVE-2026-68820
    Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
    https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-68820


II. Solution
Please apply the security update programs through Microsoft Update, Windows
Update, etc.

    Microsoft Update Catalog
    https://www.catalog.update.microsoft.com/

    Windows Update: FAQ
    https://support.microsoft.com/en-us/help/12373/windows-update-faq


III. References
    Microsoft Corporation
    Release Notes
    https://msrc.microsoft.com/update-guide/


If you have any information regarding this alert, please contact
JPCERT/CC.

======================================================================
JPCERT Coordination Center (Cyber Security Coordination Group)
MAIL: ew-info@jpcert.or.jp
https://www.jpcert.or.jp/english/