CVE-2023-21529 – Microsoft Exchange Server

Mon, 13 Apr 2026 02:00:00 +0200

Microsoft Exchange Server contains a deserialization of untrusted data that allows an authenticated attacker to achieve remote code execution. | Åtgärd: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. | Deadline: 2026-04-27