critical
CISA KEV
Ransomware
CVE-2023-21529
Microsoft Exchange Server Deserialization of Untrusted Data Vulnerability
// Description
Microsoft Exchange Server contains a deserialization of untrusted data that allows an authenticated attacker to achieve remote code execution.
// Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Federal remediation due Apr 27, 2026 — past due
Advertisement