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Microsoft Shares Additional Mitigations for Exchange Server Vulnerabilities Under Attack

Microsoft on Friday released alternative mitigation measures for organizations who have not been able to immediately apply emergency out-of-band patches released earlier this week that address vulnerabilities being exploited to siphon e-mail data from corporate Microsoft Exchange servers. read more SecurityWeek RSS Feed

CISA Issues Emergency Directive on In-the-Wild Microsoft Exchange Flaws

Following Microsoft’s release of out-of-band patches to address multiple zero-day flaws in on-premises versions of Microsoft Exchange Server, the U.S. Cybersecurity and Infrastructure Security Agency (CISA) has issued an emergency directive warning of “active exploitation” of the vulnerabilities. <!–adsense–> The alert comes on the heels of Microsoft’s disclosure that China-based hackers were The Hacker News

Microsoft: Chinese Cyberspies Used 4 Exchange Server Flaws to Plunder Emails

Microsoft Corp. today released software updates to plug four security holes that attackers have been using to plunder email communications at companies that use its Exchange Server products. The company says all four flaws are being actively exploited as part of a complex attack chain deployed by a previously unidentified Chinese cyber espionage group. The […]

Patch now! Exchange servers attacked by Hafnium zero-days

Microsoft has detected multiple zero-day exploits being used to attack on-premises versions of Microsoft Exchange Server in limited and targeted attacks. Microsoft attributes the attacks to a group they have dubbed Hafnium. “HAFNIUM primarily targets entities in the United States across a number of industry sectors, including infectious disease researchers, law firms, higher education institutions, […]

Microsoft: Exchange updates can install without fixing vulnerabilities

Due to the critical nature of recently issued Microsoft Exchange security updates, admins need to know that the updates may have installation issues on servers where User Account Control (UAC) is enabled. […] BleepingComputer