{"id":"CVE-2026-62911","title":"Authentication bypass by capture-replay in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.","summary":"Authentication bypass by capture-replay in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.","severity":"high","cvss":8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-294"],"vendor":"microsoft","product":"exchange_server","affected":["exchange_server = 2016","exchange_server = 2019","exchange_server_subscription_edition < 15.02.2562.046"],"patched":["exchange_server_subscription_edition 15.02.2562.046"],"published":"2026-08-11","updated":"2026-10-14","sourceUpdated":"2026-10-14T22:10:00.210","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-62911","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62911","label":"secure@microsoft.com"},{"url":"https://github.com/hypnguyen1209/CVE-2026-62911","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-08-06T00:00:00+00:00"},"epss":0.00694,"epssPercentile":0.52742,"exploits":{"github":3,"githubRepos":["https://github.com/hypnguyen1209/CVE-2026-62911","https://github.com/ZeroDayEvil/CVE-2026-62911","https://github.com/fahise/cve-2026-62911"],"checkedAt":"2026-10-27T19:06:41.649Z"},"ingestedAt":"2026-09-08T18:07:34.890Z","slug":"CVE-2026-62911","body":"## Overview\n\nAuthentication bypass by capture-replay in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.\n\n## Affected\n\n- `exchange_server = 2016`\n- `exchange_server = 2019`\n- `exchange_server_subscription_edition < 15.02.2562.046`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `exchange_server_subscription_edition 15.02.2562.046`","depth":"midnight","depthScore":56,"depthScoreParts":{"impact":44,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}