Critical Microsoft Exchange Server Vulnerability Actively Exploited in Attacks

Microsoft issued an urgent security alert regarding a newly discovered vulnerability in Exchange Server that is currently being exploited in the wild. Tracked as CVE-2026-42897, this critical spoofing flaw carries a high CVSS 3.1 severity score of 8.1 and directly impacts on-premises email infrastructure. Threat actors are actively exploiting this network-based weakness to compromise organizational […] The post Critical Microsoft Exchange Server Vulnerability Actively Exploited in Attacks appeared first on Cyber Security News.