{"id":"CVE-2026-124194","aliases":["EUVD-2026-122310","GHSA-69hg-ppjj-gg27"],"status":"published","title":"Microsoft Outlook Spoofing Vulnerability","description":"Product ui does not warn user of unsafe actions in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:H/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-14","score":0.0162,"percentile":0.7647,"model":"v2026.06.15"},"buzz":{"score":0.66,"authors":9},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":true,"fix_available":false},"cwes":["CWE-356"],"published":"2026-11-10T18:22:22Z","modified":"2026-11-13T18:11:07Z","kev":{"date_added":"2026-11-10","due_date":"2026-11-24","required_action":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2026-11-10"},{"source":"kev","since":"2026-11-10"}],"exploits":[{"source":"pocgithub","id":"AmesianX/CVE-2026-124194-poc","title":"AmesianX/CVE-2026-124194-poc","date":"2026-11-11","url":"https://github.com/AmesianX/CVE-2026-124194-poc"},{"source":"pocgithub","id":"Ghost-Bx1/cve-2026-124194-outlook-ntlm-hash-leak","title":"Ghost-Bx1/cve-2026-124194-outlook-ntlm-hash-leak","date":"2026-11-11","url":"https://github.com/Ghost-Bx1/cve-2026-124194-outlook-ntlm-hash-leak"},{"source":"pocgithub","id":"aminaljabre77-collab/outlook-ntlm-leak-investigation","title":"aminaljabre77-collab/outlook-ntlm-leak-investigation","date":"2026-11-14","url":"https://github.com/aminaljabre77-collab/outlook-ntlm-leak-investigation"}],"products":[{"vendor":"microsoft","product":"365_apps"},{"vendor":"microsoft","product":"microsoft 365 apps for enterprise"},{"vendor":"microsoft","product":"microsoft office ltsc 2021"},{"vendor":"microsoft","product":"microsoft office ltsc 2024"},{"vendor":"microsoft","product":"office"},{"vendor":"microsoft","product":"office_2021"},{"vendor":"microsoft","product":"office_2024"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-124194","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-124194","tags":["government-resource","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-124194"},{"url":"https://github.com/advisories/GHSA-69hg-ppjj-gg27"}],"sources":{"cve":[{"id":"CVE-2026-124194","title":"Microsoft Outlook Spoofing Vulnerability","description":"Product ui does not warn user of unsafe actions in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.","status":"published","published":"2026-11-10T18:22:22.493Z","modified":"2026-11-13T18:11:07.384Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:H/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-356"],"updated_at":"2026-11-10T22:18:26.838446Z"}],"euvd":[{"id":"EUVD-2026-122310","description":"Product ui does not warn user of unsafe actions in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.","status":"published","published":"2026-11-10T18:22:22Z","modified":"2026-11-13T18:11:07Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:H/RL:O/RC:C","level":"medium"}],"exploited_since":"2026-11-10","updated_at":"2026-11-11T00:24:55.360765Z"}],"ghsa":[{"id":"GHSA-69hg-ppjj-gg27","title":"Product ui does not warn user of unsafe actions in Microsoft Office Outlook allows an...","description":"Product ui does not warn user of unsafe actions in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.","status":"published","published":"2026-11-10T21:33:51Z","modified":"2026-11-10T21:33:57Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-356"],"updated_at":"2026-11-10T21:57:55.411542Z"}],"kev":[{"id":"CVE-2026-124194","title":"Microsoft Office Outlook Missing User Interaction for Potentially Unsafe Action Vulnerability","description":"Microsoft Office Outlook contains a missing user interaction for potentially unsafe action vulnerability that allows an unauthorized attacker to perform spoofing over a network.","cwes":["CWE-356"],"kev":{"date_added":"2026-11-10","due_date":"2026-11-24","required_action":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","known_ransomware_use":"Unknown"},"updated_at":"2026-11-10T20:11:01.498133Z"}],"nvd":[{"id":"CVE-2026-124194","description":"Product ui does not warn user of unsafe actions in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.","status":"published","published":"2026-11-10T19:20:48.18Z","modified":"2026-11-11T05:19:35.99Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-356"],"updated_at":"2026-11-11T00:21:54.604297Z"}]}}