On-Prem Microsoft Exchange Server CVE-2026-42897 Exploited via Crafted Email
Microsoft has disclosed a new security vulnerability impacting on-premise versions of Exchange Server that it said has come under active exploitation in the wild
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Background for this topic.
Email is a method of exchanging digital messages across the internet or other computer networks. Within the context of information security, email is a significant vector for cyber threats, such as phishing attacks, malware distribution, and information leaks. Email security encompasses the practices and technologies used to protect email accounts and communications from unauthorized access, compromise, or theft.
Emails can contain sensitive data, including personal information, corporate secrets, and financial details that can be exploited by cybercriminals. As such, protecting email systems involves implementing advanced security measures like encryption, anti-spam filters, anti-virus protection, and secure email gateways. Moreover, it includes educating users on safe email practices to prevent social engineering schemes, which often rely on human error to succeed.
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Microsoft has disclosed a new security vulnerability impacting on-premise versions of Exchange Server that it said has come under active exploitation in the wild