{"id":"CVE-2018-0802","published":"2018-01-10T01:29:00Z","modified":"2026-06-17T01:31:41Z","title":"Microsoft Office Memory Corruption Vulnerability","vendor":"Microsoft","product":"Office","tier":"core","eol":null,"description":{"text":"Equation Editor in Microsoft Office 2007, Microsoft Office 2010, Microsoft Office 2013, and Microsoft Office 2016 allow a remote code execution vulnerability due to the way objects are handled in memory, aka \"Microsoft Office Memory Corruption Vulnerability\". This CVE is unique from CVE-2018-0797 and CVE-2018-0812.","provenance":"source","from":"NVD"},"summary":{"text":"A memory corruption flaw in the Equation Editor component of Microsoft Office 2007, 2010, 2013 and 2016 is caused by how objects are handled in memory, leading to an out-of-bounds write. An attacker who can get a user to open a crafted document, with user interaction required and no prior authentication needed, could execute arbitrary code, and the attack vector is recorded as local.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-29T07:10:51Z"},"cvss":{"score":7.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.93289,"percentile":0.99835,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2021-11-03","dueDate":"2022-05-03","ransomware":true,"requiredAction":"Apply updates per vendor instructions.","notes":"https://nvd.nist.gov/vuln/detail/CVE-2018-0802","provenance":"source"},"vulncheckKev":{"dateAdded":"2018-01-09","exploitedFirstSeen":"2018-01-09","ransomware":true,"evidence":[{"url":"https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2018-Jan","date":"2018-01-09"},{"url":"https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit","date":"2018-01-09"},{"url":"https://www.freebuf.com/column/159865.html","date":"2018-01-10"},{"url":"https://www2.fireeye.com/rs/848-DID-242/images/rpt_APT37.pdf","date":"2018-02-04"},{"url":"https://www.fireeye.com/blog/threat-research/2018/02/apt37-overlooked-north-korean-actor.html","date":"2018-02-20"},{"url":"https://www.trendmicro.com/en_us/research/18/c/tropic-trooper-new-strategy.html","date":"2018-03-14"},{"url":"https://go.recordedfuture.com/hubfs/reports/cta-2018-0626.pdf","date":"2018-06-26"},{"url":"https://www.crowdstrike.com/blog/two-birds-one-stone-panda/","date":"2018-08-30"},{"url":"https://www.group-ib.com/resources/threat-research/silence_moving-into-the-darkside.pdf","date":"2018-09-01"},{"url":"https://www.africacybersecurityconference.com/document/CrowdStrike_GTR_2019.pdf","date":"2018-12-05"}],"evidenceTotal":57,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev 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2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"references":[{"url":"http://www.securityfocus.com/bid/102347","tags":["Broken Link","Third Party Advisory","VDB Entry"]},{"url":"http://www.securitytracker.com/id/1040153","tags":["Broken Link","Third Party Advisory","VDB Entry"]},{"url":"https://0patch.blogspot.com/2018/01/the-bug-that-killed-equation-editor-how.html","tags":["Exploit","Third Party Advisory"]},{"url":"https://github.com/rxwx/CVE-2018-0802","tags":["Exploit","Third Party Advisory"]},{"url":"https://github.com/zldww2011/CVE-2018-0802_POC","tags":["Third Party 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subsidiaries\r\nExecution\r\nExploitation for Client Execution T1203 Used to exploit CVE-2018-0802 and","start":47540,"end":47835},{"reportId":"SRC-e691b31be0c8233f6eab","quote":"**VenomKit.** VenomKit is a tool that threat actors can use to craft malicious Rich Text File (RTF) documents that exploit multiple vulnerabilities, including CVE-2017–11882, CVE-2018–0802, and CVE-2018–8174.","start":7733,"end":7941}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1072","name":"Software Deployment Tools","tactics":["execution","lateral-movement"],"provenance":"machine","basis":"dataset-annotation","bases":["dataset-annotation"],"basisDetail":"TRAM2 annotated sentence label","mappingType":null,"evidence":[{"reportId":"SRC-eab7254e3b05d632fdf6","quote":"RoyalRoad leverages a specific set of vulnerabilities, including CVE-2018-0802, CVE-2018-0798, and CVE-2017-11882, within the Equation Editor of Microsoft Office.","start":3376,"end":3538}],"confidence":"low","confidenceNote":"machine-matched from report text"},{"id":"T1566","name":"Phishing","tactics":["initial-access"],"provenance":"machine","basis":"dataset-annotation","bases":["dataset-annotation"],"basisDetail":"AnnoCTR expert entity-linking label (train split)","mappingType":null,"evidence":[{"reportId":"SRC-e691b31be0c8233f6eab","quote":"**VenomKit.** VenomKit is a tool that threat actors can use to craft malicious Rich Text File (RTF) documents that exploit multiple vulnerabilities, including CVE-2017–11882, CVE-2018–0802, and CVE-2018–8174.","start":7733,"end":7941}],"confidence":"low","confidenceNote":"machine-matched from report text"}],"reports":[{"id":"SRC-c25100ad56d1b485f562","title":"Bitter APT adds Bangladesh to their targets","publisher":"blog.talosintelligence.com","url":"https://blog.talosintelligence.com/bitter-apt-adds-bangladesh-to-their/","date":"2022-05-11","mentions":[{"quote":"the Equation Editor 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Kit\r\nCVE-2018-0802","start":33621,"end":33941}]},{"id":"SRC-544c7af11fcaf6f5afbe","title":"Operation ENDTRADE: TICK’s Multi-Stage Backdoors for Attacking Industries and Stealing Classified Data","publisher":"documents.trendmicro.com","url":"https://documents.trendmicro.com/assets/pdf/Operation-ENDTRADE-TICK-s-Multi-Stage-Backdoors-for-Attacking-Industries-and-Stealing-Classified-Data.pdf","date":null,"mentions":[{"quote":"In early 2019, TICK began implementing techniques that exploit vulnerabilities CVE-2018-0802 and","start":11345,"end":11441},{"quote":"CVE-2018-0802","start":11793,"end":11806},{"quote":"Exploiting CVE-2018-0802 and CVE-2018-0798 for downloader’s deployment","start":12037,"end":12107},{"quote":"ATT&CK Techniques\r\nTactic Technique ID Description\r\nInitial\r\nAccess\r\nSpearphishing Attachment T1193 Used to deliver first stage malware\r\nSupply Chain Compromise T1195 Used for initial intrusion on subsidiaries\r\nExecution\r\nExploitation for Client Execution T1203 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