CISA: Patching ProxyShell Flaws in Exchange Servers Is Urgent. Ransomware gangs are exploiting ProxyShell vulnerabilities in Microsoft Exchange email servers. CISA urges organizations to check for vulnerable servers on their networks and apply Microsoft’s patches. The ProxyShell flaws were discovered by Devcore security researcher Cheng-Da Tsai – also known as Orange Tsai. The vulnerabilities are worse than ProxyLogon, the Exchange vulnerabilities revealed in March, and are more exploitable, CISA says.”]
Source: https://www.cuinfosecurity.com/cisa-patching-proxyshell-flaws-in-exchange-servers-urgent-a-17350