{"id":"CVE-2023-21529","aliases":[],"url":"https://o3.security/vulnerability/CVE-2023-21529","summary":"Microsoft Exchange Server Remote Code Execution Vulnerability","details":"Microsoft Exchange Server Remote Code Execution Vulnerability","published":"2023-02-14T20:15:11.743","modified":"2026-08-19T17:18:05.870","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.62104,"percentile":0.99121,"asOf":"2026-09-08"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[],"fix":null,"references":[{"type":"FIX","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21529"},{"type":"FIX","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21529"},{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-21529"},{"type":"WEB","url":"https://www.microsoft.com/en-us/security/blog/2026/04/06/storm-1175-focuses-gaze-on-vulnerable-web-facing-assets-in-high-tempo-medusa-ransomware-operations/"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-19T17:18:05.870"}}