Microsoft Urges Immediate Mitigation for Exchange Server ZeroDay Under Active Attack
Legacy, onpremises email infrastructure remains a premier playground for threat actors seeking initial access into enterprise environments. On May 19,
Legacy, onpremises email infrastructure remains a premier playground for threat actors seeking initial access into enterprise environments. On May 19, 2026, cybersecurity indicators confirmed widespread network scanning for CVE202642897, an unpatched Microsoft Exchange zeroday being actively exploited in the wild. The highseverity flaw strikes Outlook Web Access, allowing an attacker to execute arbitrary malicious JavaScript within an enterprise mailbox simply by sending a specially crafted email. Corporate security faces "Boring Vulnerability Resurgence," where attackers bypass advanced defenses by targeting unpatched, internetfacing core communication tools. Enterprise administrators are utilizing Microsofts Emergency Mitigation Service to block incoming scripts while awaiting a formal patch. Zerodays in legacy email prove that moving away from onpremises infrastructure is no longer a strategic choice, but a matter of operational survival. System engineers must manually apply tempora
Read More..
B2B Tech News | 23 days ago