Yearly Archives: 2026

Vulnerability CVE-2026-3055 in Citrix NetScaler ADC and Gateway is being exploited

Posted on 2026-03-29 by guenni

On March 24, 2026, I warned of two critical vulnerabilities in the Citrix products mentioned in the post Critical vulnerabilities in Citrix NetScaler ADC and Gateway (March 2026). Now attacks exploiting one of these vulnerabilities are being observed in the … Continue reading →

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Windows 11 24H2 – 25H2: Preview Update KB5079391 (March 26, 2026)

Posted on 2026-03-27 by guenni

Microsoft released the Preview Update KB5079391 for Windows 11 24H2–25H2 on March 25, 2026. They continue to work on fixes and improvements for various components (including a fix for the ERROR_BAD_PATHNAME update error) and update the AI bloatware. Here is … Continue reading →

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Microsoft Outlook Classic: Workaround for crashes caused by the Teams Meeting add-in

Posted on 2026-03-27 by guenni

[German]There is an issue with Outlook Classic where the client crashes on startup due to a faulty Microsoft Teams Meeting add-in. As far as I know, Microsoft is still investigating this problem. Below, I have compiled some workarounds for those … Continue reading →

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Windows 11: Hotfix Update KB5085518 (March 23, 2026) fixes login issues

Posted on 2026-03-26 by guenni

[German]Microsoft has already released a hotfix update on March 23, 2026, for users of Windows 11 Enterprise LTSC 2024. This update is intended to resolve sign-in issues with Microsoft accounts caused by update KB5079473 from March 10, 2026. It is … Continue reading →

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Why ISL Online: Critical factors when choosing a remote desktop solution

[Sponsored Post]In the rapidly evolving IT world, choosing the right remote desktop software is critical for organizations that value security, ease of use and reliability. One provider of secure remote access that has been on the market since 2001 is ISL Online, which presents some considerations for choosing such software below. More ...

Critical vulnerabilities in Citrix NetScaler ADC and Gateway (March 2026)

Posted on 2026-03-25 by guenni

[German]Citrix has issued a warning about several security vulnerabilities classified as critical in its Citrix Gateway and Citrix Netscaler ADC. CERT Bund has also published a corresponding advisory. Citrix has released firmware updates to address these vulnerabilities.

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Google Chrome 146.0.7680.164/165 fixes 8 vulnerabilities

Posted on 2026-03-24 by guenni

[German]A quick note for Google Chrome users. On March 23, 2026, Google released a new version of Chrome (146.0.7680.164/165) that addresses eight vulnerabilities in the browser. They are rated as high. It feels like the browser has to be updated … Continue reading →

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Windows 11: Out-of-band update KB5085516 fixes login issues

Posted on 2026-03-23 by guenni

[German]Users of Microsoft Teams (Free version) and other Microsoft apps (Word, Excel, etc.) have encountered sign-in issues on Windows 11 24H2–25H2 after installing update KB5079473 from March 10, 2026. On March 21, 2026, Microsoft released the out-of-band update KB5085516 to … Continue reading →

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Windchill & ZeroPLM 0-day vulnerabilities

Posted on 2026-03-22 by guenni

[German]The Windchill and ZeroPLM software systems contain critical vulnerabilities (CVS Index 10.0) that companies using these products should have been aware of since the weekend. These vulnerabilities have prompted various German state criminal investigation offices to send police officers to … Continue reading →

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March 2026 Update Fixes Nvidia Graphics Issues in Windows 10

Posted on 2026-03-21 by guenni

[German]I'm going to break down a brief issue—along with its solution—in a separate blog post, one that has been plaguing Windows users since the January 2026 Patch Day. Certain Nvidia graphics chips experienced display issues, even on Windows 10, after … Continue reading →

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Ubiquiti UniFi Network Application Vulnerabilities (CVE-2026-22557, CVE-2026-22558)

Posted on 2026-03-20 by guenni

[German]Two critical vulnerabilities have recently been disclosed in the Ubiquiti UniFi Network Application. Vulnerability CVE-2026-22557 has a CVSS score of 10.0 and can be exploited without authentication to take over an account. CVE-2026-22558 has a CVSS score of 7.7 and … Continue reading →

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