{"id":"CVE-2026-69375","title":"Authorization bypass through user-controlled key in Microsoft Exchange Server allows an authorized attacker to perform tampering over a network.","summary":"Authorization bypass through user-controlled key in Microsoft Exchange Server allows an authorized attacker to perform tampering over a network.","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","cwe":["CWE-639"],"vendor":"microsoft","product":"exchange_server","affected":["exchange_server = 2016","exchange_server = 2019","exchange_server_subscription_edition < 15.02.2562.049"],"patched":["exchange_server_subscription_edition 15.02.2562.049"],"published":"2026-09-08","updated":"2026-09-29","sourceUpdated":"2026-09-29T15:55:25.487","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-69375","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69375","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"epss":0.00644,"epssPercentile":0.50678,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-11T14:51:05.458653Z"},"ingestedAt":"2026-09-08T19:08:49.610Z","slug":"CVE-2026-69375","body":"## Overview\n\nAuthorization bypass through user-controlled key in Microsoft Exchange Server allows an authorized attacker to perform tampering over a network.\n\n## Affected\n\n- `exchange_server = 2016`\n- `exchange_server = 2019`\n- `exchange_server_subscription_edition < 15.02.2562.049`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `exchange_server_subscription_edition 15.02.2562.049`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}