{"cve":{"cve_id":"CVE-2026-65660","is_kev":true,"kev_date_added":"2026-09-25","kev_vendor_project":"Microsoft","kev_product":"SharePoint","kev_vulnerability_name":"Microsoft SharePoint Code Injection Vulnerability","kev_short_description":"Microsoft SharePoint contains a code injection vulnerability which could allow an authorized attacker to execute code over a network.","kev_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.","kev_due_date":"2026-09-28","kev_known_ransomware":false,"kev_notes":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65660 ; ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-65660","kev_cwes":["CWE-94"],"epss_score":0.02101,"epss_percentile":0.81363,"epss_as_of":"2026-10-15","description":"Improper control of generation of code ('code injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.","published_at":"2026-08-11T17:04:55.666000Z","last_modified_at":"2026-09-26T04:17:45.630000Z","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":"none","ssvc_automatable":false,"ssvc_technical_impact":"partial","cwes":["CWE-94"],"nvd_references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65660"],"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":"2026-08-11T20:20:52.861310Z","updated_at":"2026-09-26T05:38:24.218835Z"},"effective_severity":"HIGH","badges":["kev","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":"microsoft-sharepoint-enterprise-server-2016","product_name":"Microsoft SharePoint Enterprise Server 2016","version_start":"16.0.0","version_start_inclusive":true,"version_end":"16.0.5565.1001","version_end_inclusive":false,"cpe23_uri":"cve5:microsoft:microsoft-sharepoint-enterprise-server-2016:16.0.0:16.0.5565.1001"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"microsoft-sharepoint-server-2019","product_name":"Microsoft SharePoint Server 2019","version_start":"16.0.0","version_start_inclusive":true,"version_end":"16.0.10417.20198","version_end_inclusive":false,"cpe23_uri":"cve5:microsoft:microsoft-sharepoint-server-2019:16.0.0:16.0.10417.20198"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"microsoft-sharepoint-server-subscription-edition","product_name":"Microsoft SharePoint Server Subscription Edition","version_start":"16.0.0","version_start_inclusive":true,"version_end":"16.0.19725.20522","version_end_inclusive":false,"cpe23_uri":"cve5:microsoft:microsoft-sharepoint-server-subscription-edition:16.0.0:16.0.19725.20522"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"sharepoint-server","product_name":"sharepoint_server","version_start":null,"version_start_inclusive":null,"version_end":"16.0.19725.20522","version_end_inclusive":false,"cpe23_uri":"cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"sharepoint-server","product_name":"sharepoint_server","version_start":"2016","version_start_inclusive":true,"version_end":"2016","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"sharepoint-server","product_name":"sharepoint_server","version_start":"2019","version_start_inclusive":true,"version_end":"2019","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*"}],"exploit_refs":[],"news":[{"id":2156,"source":"The Hacker News","url":"https://thehackernews.com/2026/09/sharepoint-rce-and-mikrotik-routeros.html","title":"SharePoint RCE and MikroTik RouterOS Flaws Actively Exploited in the Wild","summary":"The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday added two security flaws impacting Microsoft SharePoint and Mikrotik RouterOS to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation.\n\nThe vulnerabilities in question are as follows -\n\n\n  CVE-2026-65660 (CVSS score: 8.8) - A code injection vulnerability in Microsoft Office SharePoint","thumbnail_url":"https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiHEPamtRBBEzltsUWnj-F8umrMf4eUUhTmGUJdhHlrvWZamHWpBtXcrpQKDArTziRiiIWv8psX4DTZyN9kLBtcAyLOPJma9_M7sYKgYz6WBISbOhJrRlfByfCKfTTMdBqaYUp-0nskrt2ndt3poUFLDGegEFJojS0EzEvwAqzaUNtvX26jZopYE4zA4S3K/s1600/share-kev.jpg","author":"info@thehackernews.com (The Hacker News)","published_at":"2026-09-26T08:49:53Z","fetched_at":"2026-09-26T10:06:55.263233Z","trending_score":0.000034328464725882614,"cve_ids":["CVE-2026-65660"]},{"id":2018,"source":"The Hacker News","url":"https://thehackernews.com/2026/09/sharepoint-flaw-initially-listed-as.html","title":"SharePoint Flaw Initially Listed as Spoofing by Microsoft Enables Authenticated RCE","summary":"A SharePoint Server vulnerability that Microsoft initially classified as a spoofing flaw with a CVSS score of 6.5 actually enables authenticated remote code execution, according to full technical details published today by Viettel Cyber Security researcher Dinh Ho Anh Khoa.\n\nThe flaw, CVE-2026-65660, affects SharePoint Server 2016, 2019, and Subscription Edition. Patches have been","thumbnail_url":"https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiu0R8P6iyk50vNReEGl0FkwYoFPk5n2fkVC3_3Mf2J5SaQ7yFIHbA3xuQpCATCQ9Y5Ie2ysz9EVaDb_vR5Bbnp209w28bSDK2Rqggotv4NPQbFB5LX4SUT4eztA-6939clsV9QQ41MHwIl8MFSzaJwyFFeBusztZ9H7oZhiUOlFYrL8BQh6hXWegn39uU/s1600/ms-rce.jpg","author":"info@thehackernews.com (The Hacker News)","published_at":"2026-09-22T11:17:41Z","fetched_at":"2026-09-22T12:31:12.097692Z","trending_score":8.89289330325351e-6,"cve_ids":["CVE-2026-65660"]}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65660","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2026-08-11T17:04:55.666000Z","label":"CVE published","source":null},{"type":"ssvc_changed","at":"2026-08-11T21:21:52.875821Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-08-11T21:21:52.875821Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-08-11T21:21:52.875821Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-08-30T07:35:30.380633Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-08-30T07:35:30.380633Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-08-30T07:35:30.380633Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"first_article","at":"2026-09-22T11:17:41Z","label":"First news coverage","source":"The Hacker News"},{"type":"cisa_reported","at":"2026-09-25T00:00:00Z","label":"Added to CISA KEV catalog","source":"kev"}]}