{"cve":{"cve_id":"CVE-2026-96940","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00485,"epss_percentile":0.40283,"epss_as_of":"2026-10-15","description":"Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.","published_at":"2026-10-02T19:06:19.061000Z","last_modified_at":"2026-10-15T02:35:54.010000Z","cvss_v3_score":8.8,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-1390"],"nvd_references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96940"],"vuln_status":"Analyzed","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-10-02T20:03:31.423676Z","updated_at":"2026-10-20T02:20:54.235708Z"},"effective_severity":"HIGH","badges":["news"],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"},{"metric":"E","name":"E","value":"U","value_label":"Unchanged"},{"metric":"RL","name":"RL","value":"O","value_label":"O"},{"metric":"RC","name":"RC","value":"C","value_label":"Changed"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"exchange-server","product_name":"exchange_server","version_start":"2016","version_start_inclusive":true,"version_end":"2016","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_23:*:*:*:*:*:*"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"exchange-server","product_name":"exchange_server","version_start":"2019","version_start_inclusive":true,"version_end":"2019","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_15:*:*:*:*:*:*"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"exchange-server","product_name":"exchange_server","version_start":"2019","version_start_inclusive":true,"version_end":"2019","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_14:*:*:*:*:*:*"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"exchange-server-subscription-edition","product_name":"exchange_server_subscription_edition","version_start":null,"version_start_inclusive":null,"version_end":"15.02.2562.053","version_end_inclusive":false,"cpe23_uri":"cpe:2.3:a:microsoft:exchange_server_subscription_edition:*:*:*:*:*:*:*:*"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"microsoft-exchange-server-2016-cumulative-update-23","product_name":"Microsoft Exchange Server 2016 Cumulative Update 23","version_start":"15.01.0.0","version_start_inclusive":true,"version_end":"15.01.2507.075","version_end_inclusive":false,"cpe23_uri":"cve5:microsoft:microsoft-exchange-server-2016-cumulative-update-23:15.01.0.0:15.01.2507.075"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"microsoft-exchange-server-2019-cumulative-update-14","product_name":"Microsoft Exchange Server 2019 Cumulative Update 14","version_start":"15.02.0.0","version_start_inclusive":true,"version_end":"15.02.1544.048","version_end_inclusive":false,"cpe23_uri":"cve5:microsoft:microsoft-exchange-server-2019-cumulative-update-14:15.02.0.0:15.02.1544.048"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"microsoft-exchange-server-2019-cumulative-update-15","product_name":"Microsoft Exchange Server 2019 Cumulative Update 15","version_start":"15.02.0.0","version_start_inclusive":true,"version_end":"15.02.1748.053","version_end_inclusive":false,"cpe23_uri":"cve5:microsoft:microsoft-exchange-server-2019-cumulative-update-15:15.02.0.0:15.02.1748.053"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"microsoft-exchange-server-subscription-edition-rtm","product_name":"Microsoft Exchange Server Subscription Edition RTM","version_start":"15.02.0.0","version_start_inclusive":true,"version_end":"15.02.2562.053","version_end_inclusive":false,"cpe23_uri":"cve5:microsoft:microsoft-exchange-server-subscription-edition-rtm:15.02.0.0:15.02.2562.053"}],"exploit_refs":[],"news":[{"id":2352,"source":"The Hacker News","url":"https://thehackernews.com/2026/10/microsoft-exchange-flaw-lets.html","title":"Microsoft Exchange Flaw Lets Authenticated Attackers Read Other Users' Mailboxes","summary":"Microsoft has released out-of-band security updates to address a high-severity flaw in Microsoft Exchange Server that could allow an attacker to escalate privileges under certain conditions.\n\nThe vulnerability, tracked as CVE-2026-96940, is rated 8.8 on the CVSS scoring system.\n\n\"Weak authorization in Microsoft Exchange Server allows an authenticated attacker to elevate privileges over a","thumbnail_url":"https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiBNa12GUjRngANug2kbws6i9X_HPN2PRVbOcxr7GtaXMKq9PloaCTD7DuYC8zZIcrg5Wa-F5pDv9y-00EMX4QWvovMz-ZWK5vNZ-gkIdEA7UiZQ1SqBCZof411VOQt6nQrvZCYxZpmzPA3hUeFia9KVP45Q1J1OPkiIH_Fhy5hoiOo9z6eYw1H16RgvKs5/s1600/ms-emails.jpg","author":"info@thehackernews.com (The Hacker News)","published_at":"2026-10-05T16:21:52Z","fetched_at":"2026-10-05T17:30:06.346549Z","trending_score":0.0007878438458288485,"cve_ids":["CVE-2026-96940"]}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96940","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2026-10-02T19:06:19.061000Z","label":"CVE published","source":null},{"type":"first_article","at":"2026-10-05T16:21:52Z","label":"First news coverage","source":"The Hacker News"}]}