{"id":"CVE-2023-21529","vendor_project":"Microsoft","product":"Exchange Server","vulnerability_name":"Microsoft Exchange Server Deserialization of Untrusted Data Vulnerability","date_added":"2026-04-13","due_date":"2026-04-27","known_ransomware_use":"Known","short_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.","cwes":"CWE-502","cvss_version":"3.1","cvss_severity":"HIGH","cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","nvd_published":"2023-02-14","nvd_status":"Analyzed","epss":0.62104,"epss_percentile":0.99141,"cvss_score":8.8,"days_published_to_kev":1154,"source":"https://data.cybermax-tools.workers.dev/cve/CVE-2023-21529","by":"CyberMax"}