{"cve":{"cve_id":"CVE-2018-0798","is_kev":true,"kev_date_added":"2021-11-03","kev_vendor_project":"Microsoft","kev_product":"Office","kev_vulnerability_name":"Microsoft Office Memory Corruption Vulnerability","kev_short_description":"Microsoft Office contains a memory corruption vulnerability due to the way objects are handled in memory. Successful exploitation allows for remote code execution in the context of the current user. This vulnerability is known to be chained with CVE-2018-0802.","kev_required_action":"Apply updates per vendor instructions.","kev_due_date":"2022-05-03","kev_known_ransomware":false,"kev_notes":"https://nvd.nist.gov/vuln/detail/CVE-2018-0798","kev_cwes":["CWE-787"],"epss_score":0.95121,"epss_percentile":0.99853,"epss_as_of":"2026-06-23","description":"Equation Editor in Microsoft Office 2007, Microsoft Office 2010, Microsoft Office 2013, and Microsoft Office 2016 allows a remote code execution vulnerability due to the way objects are handled in memory, aka \"Microsoft Office Memory Corruption Vulnerability\".","published_at":"2018-01-10T01:00:00Z","last_modified_at":null,"cvss_v3_score":8.8,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"active","ssvc_automatable":false,"ssvc_technical_impact":"total","cwes":["CWE-787"],"nvd_references":["http://www.securityfocus.com/bid/102370","http://www.securitytracker.com/id/1040153","https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0798","https://0patch.blogspot.com/2018/01/bringing-abandoned-equation-editor-back.html"],"vuln_status":null,"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":"2026-06-24T00:09:31.350578Z","updated_at":"2026-06-28T23:10:29.139721Z"},"effective_severity":"HIGH","badges":["kev","epss"],"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":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"R","value_label":"Required"},{"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"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"microsoft-corporation","vendor_name":"Microsoft Corporation","product_slug":"equation-editor","product_name":"Equation Editor","version_start":"Microsoft Office 2007, Microsoft Office 2010, Microsoft Office 2013, and Microsoft Office 2016","version_start_inclusive":true,"version_end":"Microsoft Office 2007, Microsoft Office 2010, Microsoft Office 2013, and Microsoft Office 2016","version_end_inclusive":true,"cpe23_uri":"cve5:microsoft-corporation:equation-editor:Microsoft Office 2007, Microsoft Office 2010, Microsoft Office 2013, and Microsoft Office 2016:Microsoft Office 2007, Microsoft Office 2010, Microsoft Office 2013, and Microsoft Office 2016"}],"exploit_refs":[],"news":[],"references":[{"url":"http://www.securityfocus.com/bid/102370","source_type":"MISC","tags":[]},{"url":"http://www.securitytracker.com/id/1040153","source_type":"MISC","tags":[]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0798","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://0patch.blogspot.com/2018/01/bringing-abandoned-equation-editor-back.html","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2018-01-10T01:00:00Z","label":"CVE published","source":null},{"type":"cisa_reported","at":"2021-11-03T00:00:00Z","label":"Added to CISA KEV catalog","source":"kev"},{"type":"ssvc_changed","at":"2026-06-24T00:31:12.162116Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-24T00:31:12.162116Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-24T00:31:12.162116Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:31:12.162116Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:31:12.162116Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:31:12.162116Z","label":"CVSS score revised","source":"vulnrichment"}]}