January, 2026 - www.butsch.ch

Deployment Microsoft Exchange Outlook WSUS

CVE-2026-21509 | 0-day exploit mitigation Batch OF2016 + OF2019

26.01.2026 admin

Microsoft Office Security Feature Bypass Vulnerability | How to import into WSUS Server or deploy with Intune or Autopatch CVE-2026-21509, Security Vulnerability, Released: Jan 26, 2026, Last updated: Jan 26, 2026 Assigning CNA Microsoft CVE.org link CVE-2026-21509 Impact Security Feature Bypass Max Severity Important Weakness CWE-807: Reliance on Untrusted Inputs in a Security Decision CVSS […]

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Product: Microsoft Edge — Error 1722. There is a problem with this Windows Installer package, Event 11722

11.01.2026 admin

EVENT, 11722, MSIinstaller, Application This issue keeps resurfacing, and we most commonly encounter it in customer environments running parallel systems—such as Citrix alongside VDI—but it also appears in traditional Windows desktop deployments. Our observations suggest a strong correlation with scenarios where the same user account is actively used across multiple platforms at the same time […]

Certificate Revocation List Check Tool is designed to enhance security by performing several key functions related to executable files (EXE). It can scan your client for EXE files and examine their code-signing certificates. The tool also searches for the relevant CRL to determine whether it can be downloaded. It validates the integrity of the certificate chain, checks both the certificate and CRL for expiration dates, and can export a comprehensive list of all gathered information as a file. Additionally, it cross-references to ensure you are not using any revoked certificates, helping maintain a secure environment.

Month: January 2026

CVE-2026-21509 | 0-day exploit mitigation Batch OF2016 + OF2019

Product: Microsoft Edge — Error 1722. There is a problem with this Windows Installer package, Event 11722