{"id":"CVE-2023-35311","aliases":["EUVD-2023-39314","GHSA-3w2f-j9r3-9h89"],"status":"published","title":"Microsoft Outlook Security Feature Bypass Vulnerability","description":"Microsoft Outlook Security Feature Bypass Vulnerability","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.15522,"percentile":0.96854,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":false,"fix_available":false},"cwes":["CWE-367"],"published":"2023-07-11T17:03:27Z","modified":"2026-10-08T10:35:03Z","kev":{"date_added":"2023-07-11","due_date":"2023-08-01","required_action":"Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2023-07-11"},{"source":"kev","since":"2023-07-11"}],"products":[{"vendor":"microsoft","product":"365_apps"},{"vendor":"microsoft","product":"microsoft 365 apps for enterprise"},{"vendor":"microsoft","product":"microsoft office 2019"},{"vendor":"microsoft","product":"microsoft office ltsc 2021"},{"vendor":"microsoft","product":"microsoft outlook 2013"},{"vendor":"microsoft","product":"microsoft outlook 2013 service pack 1"},{"vendor":"microsoft","product":"microsoft outlook 2016"},{"vendor":"microsoft","product":"office_2019"},{"vendor":"microsoft","product":"office_2021"},{"vendor":"microsoft","product":"outlook"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35311","tags":["vendor-advisory","x_transferred","Patch","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-35311","tags":["government-resource","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-35311"},{"url":"https://github.com/advisories/GHSA-3w2f-j9r3-9h89"}],"sources":{"cve":[{"id":"CVE-2023-35311","title":"Microsoft Outlook Security Feature Bypass Vulnerability","description":"Microsoft Outlook Security Feature Bypass Vulnerability","status":"published","published":"2023-07-11T17:03:27.227Z","modified":"2026-10-07T17:43:22.867Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T14:35:33.794347Z"}],"euvd":[{"id":"EUVD-2023-39314","description":"Microsoft Outlook Security Feature Bypass Vulnerability","status":"published","published":"2023-07-11T17:03:27Z","modified":"2026-10-07T17:43:22Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C","level":"high"}],"exploited_since":"2023-07-11","updated_at":"2026-11-02T17:27:34.815018Z"}],"ghsa":[{"id":"GHSA-3w2f-j9r3-9h89","title":"Microsoft Outlook Security Feature Bypass Vulnerability","description":"Microsoft Outlook Security Feature Bypass Vulnerability","status":"published","published":"2023-07-11T18:31:27Z","modified":"2025-10-22T00:33:52Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T15:04:08.734574Z"}],"kev":[{"id":"CVE-2023-35311","title":"Microsoft Outlook Security Feature Bypass Vulnerability","description":"Microsoft Outlook contains a security feature bypass vulnerability that allows an attacker to bypass the Microsoft Outlook Security Notice prompt.","cwes":["CWE-367"],"kev":{"date_added":"2023-07-11","due_date":"2023-08-01","required_action":"Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.","known_ransomware_use":"Unknown"},"updated_at":"2026-11-02T17:00:16.234141Z"}],"nvd":[{"id":"CVE-2023-35311","description":"Microsoft Outlook Security Feature Bypass Vulnerability","status":"published","published":"2023-07-11T18:15:17.177Z","modified":"2026-10-08T10:35:03.547Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T14:08:15.91037Z"}]}}