{"id":"CVE-2026-70571","aliases":["EUVD-2026-100139","GHSA-6m32-fvj6-jjf4"],"status":"published","title":"Microsoft Exchange Server Remote Code Execution Vulnerability","description":"Stack-based buffer overflow in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01391,"percentile":0.72562,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121"],"published":"2026-10-13T19:01:10Z","modified":"2026-11-10T20:43:56Z","products":[{"vendor":"microsoft","product":"microsoft exchange server 2016 cumulative update 23"},{"vendor":"microsoft","product":"microsoft exchange server 2019 cumulative update 14"},{"vendor":"microsoft","product":"microsoft exchange server 2019 cumulative update 15"},{"vendor":"microsoft","product":"microsoft exchange server subscription edition rtm"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70571","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70571"},{"url":"https://github.com/advisories/GHSA-6m32-fvj6-jjf4"}],"sources":{"cve":[{"id":"CVE-2026-70571","title":"Microsoft Exchange Server Remote Code Execution Vulnerability","description":"Stack-based buffer overflow in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-10-13T19:01:10.195Z","modified":"2026-11-10T20:43:56.903Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-121"],"updated_at":"2026-11-10T22:18:28.707469Z"}],"euvd":[{"id":"EUVD-2026-100139","description":"Stack-based buffer overflow in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-10-13T19:01:10Z","modified":"2026-11-10T20:43:56Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-10T22:23:56.642439Z"}],"ghsa":[{"id":"GHSA-6m32-fvj6-jjf4","title":"Stack-based buffer overflow in Microsoft Exchange Server allows an unauthorized attacker to...","description":"Stack-based buffer overflow in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-10-13T21:34:23Z","modified":"2026-10-13T21:34:28Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T15:13:15.646152Z"}],"nvd":[{"id":"CVE-2026-70571","description":"Stack-based buffer overflow in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-10-13T19:19:50.83Z","modified":"2026-10-14T04:18:35.963Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:12:57.603498Z"}]}}