CVE-2025-59249: high-severity vulnerability in Microsoft Exchange Server 2016 Cumulative…
Microsoft Exchange Server Elevation of Privilege Vulnerability
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
No sign of exploitation. No public exploitation artifact known so far.
Microsoft Exchange Server has weak authentication that allows someone with legitimate access to gain higher privileges on the system. This is serious because it lets an insider or compromised account take control of the entire email server.
An authenticated attacker can exploit weak authentication mechanisms in Microsoft Exchange Server to escalate privileges remotely. The vulnerability requires prior authentication access and enables complete compromise of the Exchange Server infrastructure.
In the same product, most dangerous first.