Update Rollup 23 for Exchange 2010 Service Pack 3 is now available. It contains 1 documented new security updates and all previously released fixes and security updates for Exchange 2010 SP3. Note that mainstream support for Exchange 2010 has already ended.
- CVE-2018-8302: Microsoft Exchange Memory Corruption Vulnerability
Exploitation of the vulnerability requires that a specially crafted email be sent to a vulnerable Exchange server.