How CVE-2026-42897 Puts On-Premises Exchange Servers at Risk
Microsoft has disclosed vulnerability CVE-2026-42897 (CVSS 8.1) in on-premises versions of Exchange Server, which is already being actively exploited by attackers. This cross-site scripting vulnerability allows arbitrary JavaScript code to be executed in the victim’s browser via a specially crafted email opened in Outlook Web Access. Affected are Exchange Server 2016, 2019, and Subscription Edition … Read more