Tag Archives: Exchange

Security Updates (KB5003435) for Microsoft Exchange Server (May 11, 2021)

[German]Microsoft has announced on May 11, 2021 – the expected (see Is a hotfix for Microsoft Exchange coming today? (May 11, 2021)) Security updates released for Exchange Server 2013, Exchange Server 2016 and Exchange Server 2019. This is to immediately … Continue reading

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Is a hotfix for Microsoft Exchange coming today? (May 11, 2021)

[German]A brief note and heads up for administrators of Microsoft Exchange on-premises systems. Reserve some time today (05/11/2021) to patch Exchange servers.  If the available information is correct, Microsoft is rolling out a critical hotfix for Microsoft Exchange Server in … Continue reading

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PoC for Microsoft Exchange bug discovered by NSA public

[German]Various security vulnerabilities in Microsoft Exchange were discovered by the US intelligence agency NSA and reported to Microsoft. Microsoft closed these vulnerabilities in April 2020 with corresponding updates. As a “reminder for the weekend”, we would like to point out … Continue reading

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Exchange Update errors and information (April 13, 2021)

[German]The security updates for Microsoft Exchange released on April 13, 2021 was installable without problems for most users. However, there were isolated reports of problems, which I briefly summarize here. Advertising

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Exchange Server Security Update KB5001779 (April 13, 2021)

[German]As expected, Microsoft has released security updates for Exchange Server 2013, Exchange Server 2016 and Exchange Server 2019 on April 13, 2021 (Patchday). These are intended to close vulnerabilities found that were reported by security companies. Prompt installation is recommended … Continue reading

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PSA: Watch your Exchange Patch status – 0 day vulnerabilities found, is the next Exchange disaster in sight?

[German]Ok, I think I got your attention with the headline. From what I heard, next Tuesday there will be some updates for Exchange Server. Why? Because three Exchange exploits were presented at the hacker conference Pwd2Own (6-8.4-2021). Maybe it would … Continue reading

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Exchange hack news: What’s about risk? (April 1, 2021)

[German]What is the threat situation at the end of March 2021 with regard to on-premises Exchange Server and the exploitation of the vulnerabilities that became known at the beginning of March 2021? Microsoft has provided analyses of which ransomware groups … Continue reading

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Exchange ProxyLogon News: Patch status, new PoC and new findings (03/18/2021)

[German]Regarding the Exchange ProxyLogon vulnerabilities and the mass hack of Exchange Server systems, there is a publicly available proof of concept (PoC), so new attacks are to be expected. Patching and securing is progressing slowly. Microsoft’s testing scripts should be … Continue reading

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Security update for Exchange Server 2013 SP1; CUs for Exchange 2019 and 2016 (03/16/2021)

[German]Microsoft released a security advisory to revise its outdated updates for older CUs for on-premises Microsoft Exchange Servers (which have already fallen out of support). Specifically, Microsoft has released a security update for the out-of-support Microsoft Exchange Server 2013 Service … Continue reading

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Microsoft Exchange (On-Premises) one-click Mitigation Tool (EOMT) released

[German]Microsoft has released its onclick Microsoft Exchange (On-Premises) Mitigation Tool (EOMT) as of March 15, 2021. The tool is intended to provide a one-click solution to mitigate the CVE-2021-26855 chess vulnerability on on-premises Exchange Server installations and is primarily intended … Continue reading

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