{"id":"CVE-2017-8570","published":"2017-07-11T21:29:01Z","modified":"2026-06-17T01:26:35Z","title":"Microsoft Office Remote Code Execution Vulnerability","vendor":"Microsoft","product":"Office","tier":"core","eol":null,"description":{"text":"Microsoft Office allows a remote code execution vulnerability due to the way that it handles objects in memory, aka \"Microsoft Office Remote Code Execution Vulnerability\". This CVE ID is unique from CVE-2017-0243.","provenance":"source","from":"NVD"},"summary":null,"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":0.89889,"percentile":0.9979,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2022-02-25","dueDate":"2022-08-25","ransomware":false,"requiredAction":"Apply updates per vendor instructions.","notes":"https://nvd.nist.gov/vuln/detail/CVE-2017-8570","provenance":"source"},"vulncheckKev":{"dateAdded":"2017-12-01","exploitedFirstSeen":"2017-12-01","ransomware":false,"evidence":[{"url":"https://documents.trendmicro.com/assets/tech-brief-untangling-the-patchwork-cyberespionage-group.pdf","date":"2017-12-01"},{"url":"https://www.volexity.com/blog/2018/06/07/patchwork-apt-group-targets-us-think-tanks/","date":"2018-06-07"},{"url":"https://ti.qianxin.com/blog/articles/latest-activity-of-apt-c-35/","date":"2018-07-26"},{"url":"https://blog.talosintelligence.com/2018/07/multiple-cobalt-personality-disorder.html","date":"2018-07-31"},{"url":"https://www.recordedfuture.com/blog/top-vulnerabilities-2018","date":"2019-03-19"},{"url":"https://www.antiy.cn/research/notice&report/research_report/20200522.html","date":"2020-05-22"},{"url":"https://www.anomali.com/blog/bahamut-possibly-responsible-for-multi-stage-infection-chain-campaign","date":"2021-03-31"},{"url":"https://dl.acm.org/doi/pdf/10.1145/3465481.3465758","date":"2021-08-17"},{"url":"https://www.welivesecurity.com/wp-content/uploads/2021/12/eset_jumping_the_air_gap_wp.pdf","date":"2021-12-15"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2022-02-25"}],"evidenceTotal":16,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev 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Link","Third Party Advisory","VDB Entry"]},{"url":"https://github.com/ParsingTeam/ppsx-file-generator","tags":["Exploit","Third Party Advisory"]},{"url":"https://github.com/rxwx/CVE-2017-8570","tags":["Third Party Advisory"]},{"url":"https://github.com/tezukanice/Office8570","tags":["Exploit","Third Party Advisory"]},{"url":"https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-8570","tags":["Patch","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-8570","tags":["US Government Resource"]}],"techniques":[{"id":"T1203","name":"Exploitation for Client Execution","tactics":["execution"],"provenance":"source","basis":"ctid-cve","bases":["ctid-cve","ai-mapping","dataset-annotation"],"basisDetail":"CTID attack_to_cve (Phase 1); claude-haiku-5-5: Memory handling flaw enables client-side code execution; AnnoCTR expert entity-linking label (train split)","mappingType":"uncategorized","evidence":[{"from":"description","quote":"due to the way that it handles objects in memory","start":62,"end":110},{"reportId":"SRC-0db4021c6eb46bf18c04","quote":"on a well-known Russian cybercrime forum, the seller offered two types of weaponized Microsoft Office documents (maldocs) to users: one that exploits a known vulnerability in Microsoft Office ([CVE-2017-8570](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-8570)) and another that uses a malicious","start":836,"end":1148}],"confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1204.002","name":"Malicious File","tactics":["execution"],"provenance":"source","basis":"ctid-cve","bases":["ctid-cve","ai-mapping"],"basisDetail":"CTID attack_to_cve (Phase 1); claude-haiku-5-5: User opens malicious Office file triggering RCE","mappingType":"uncategorized","evidence":[{"from":"description","quote":"Microsoft Office allows a remote code execution vulnerability","start":0,"end":61}],"confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1059","name":"Command and Scripting Interpreter","tactics":["execution"],"provenance":"machine","basis":"dataset-annotation","bases":["dataset-annotation"],"basisDetail":"AnnoCTR expert entity-linking label (train split)","mappingType":null,"evidence":[{"reportId":"SRC-0db4021c6eb46bf18c04","quote":"advertised on a well-known Russian cybercrime forum, the seller offered two types of weaponized Microsoft Office documents (maldocs) to users: one that exploits a known vulnerability in Microsoft Office ([CVE-2017-8570](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-8570)) and another that uses a","start":825,"end":1138},{"reportId":"SRC-0db4021c6eb46bf18c04","quote":"on a well-known Russian cybercrime forum, the seller offered two types of weaponized Microsoft Office documents (maldocs) to users: one that exploits a known vulnerability in Microsoft Office ([CVE-2017-8570](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-8570)) and another that uses a malicious macro.","start":836,"end":1155},{"reportId":"SRC-0db4021c6eb46bf18c04","quote":"on a well-known Russian cybercrime forum, the seller offered two types of weaponized Microsoft Office documents (maldocs) to users: one that exploits a known vulnerability in Microsoft Office ([CVE-2017-8570](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-8570)) and another that uses a malicious","start":836,"end":1148}],"confidence":"low","confidenceNote":"machine-matched from report text"}],"reports":[{"id":"SRC-0db4021c6eb46bf18c04","title":"EtterSilent: the underground’s new favorite maldoc builder","publisher":"Intel 471","url":"https://github.com/boschresearch/anno-ctr-lrec-coling-2024/blob/d510b6949e1938d47c93a43eedd562dc538439dc/AnnoCTR/text/train/intel471_2021-04-07_ettersilent-maldoc-builder-macro-trickbot.txt","date":"2021-04-07","mentions":[{"quote":"on a well-known Russian cybercrime forum, the seller offered two types of weaponized Microsoft Office documents (maldocs) to users: one that exploits a known vulnerability in Microsoft Office ([CVE-2017-8570](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-8570)) and another that uses a malicious","start":836,"end":1148}]},{"id":"SRC-32b4a86aef7be395b65b","title":"Patchwork APT Group Targets US Think Tanks","publisher":"volexity.com","url":"https://www.volexity.com/blog/2018/06/07/patchwork-apt-group-targets-us-think-tanks/","date":"2018-06-07","mentions":[{"quote":"Each of the spear phishing attacks contained links to .doc files, which were really RTF documents that attempt to exploit CVE-2017-8570 (Composite Moniker).","start":1452,"end":1608},{"quote":"The threat actors appear to have leveraged publicly available exploit code that can be found on Github at the URL: https://github.com/rxwx/CVE-2017-8570.","start":1609,"end":1762},{"quote":"Second, the threat actors exploit CVE-2017-8570 to achieve code execution via a malicious “scriptlet” file, or .sct file, which is also embedded in the malicious RTF document.","start":6105,"end":6280},{"quote":"Note: The scriptlet code is an exact match to that shown on the Github page referenced earlier for CVE-2017-8570.","start":6456,"end":6569},{"quote":"| Notes | Malicious RTF document that exploits CVE-2017-8570 and drops QuasarRAT file qrat.exe.","start":9677,"end":9772}]},{"id":"SRC-7337a86c8549e6b0b5ea","title":"2020 Financial Services and Insurance Industry Threat Report","publisher":"proofpoint.com","url":"https://www.proofpoint.com/sites/default/files/threat-reports/pfpt-au-tr-financial-services-and-insurance.pdf","date":null,"mentions":[{"quote":"CVE-2017-8570 Lemon Tree FreeRDP","start":16325,"end":16357},{"quote":"VBS Password Protected Regsvr32 Compressed Executable Geofencing Regsvcs/Regasm\r\nScheduled Task BITS Jobs HTML BlackTDS LCG Kit Executable CVE-2017-11882 JavaJavaScript\r\nCAPTCHA CVE-2018-8174\r\nCompiled HTML File\r\nAutolt HTA Packager Shell Object IP Filtering Certutil CVE-2017-8570 Application Access Token","start":24247,"end":24553},{"quote":"S RIG Exploit Kit VBS\r\nPDF Geofencing XL4 Macro Regsvr32 Compressed Executable Executable HTML\r\nScheduled Task\r\nBITS Jobs\r\nThreadkit\r\nBlackTDS\r\nLCG Kit\r\nCVE-2014-0515\r\nCVE-2017-11882\r\nJava\r\nPassword Protected\r\nCAPTCHA\r\nCVE-2018-8174\r\nCompiled HTML File\r\nAutolt HTAPackager Shell Object IP FilteringCertutil CVE-2017-8570","start":27461,"end":27781},{"quote":"CVE-2017-8570.","start":32944,"end":32958},{"quote":"XL4 MacroRegsvr32 Compressed Executable\r\nExecutableHTML Scheduled Task\r\nBITS Jobs\r\nThreadkit\r\nBlackTDS\r\nLCG Kit\r\nCVE-2014-0515\r\nCVE-2017-11882\r\nJava\r\nPassword Protected\r\nCAPTCHA\r\nCVE-2018-8174\r\nCompiled HTML File\r\nAutolt\r\nHTA\r\nPackager Shell Object\r\nIP FilteringCertutil CVE-2017-8570Application Access","start":33587,"end":33889}]},{"id":"SRC-5d409288624ad2cb61d6","title":"Tech brief untangling the patchwork cyberespionage group","publisher":"documents.trendmicro.com","url":"https://documents.trendmicro.com/assets/tech-brief-untangling-the-patchwork-cyberespionage-group.pdf","date":null,"mentions":[{"quote":"It exploits CVE-2017-8570 (an RCE vulnerability in Microsoft Office","start":13555,"end":13622},{"quote":"Figure 9: Screenshot of the Word document containing a PPSX file that exploits CVE-2017-8570","start":13733,"end":13825}]},{"id":"SRC-2efed077c8da52f0bcef","title":"Agent Tesla | Old RAT Uses New Tricks to Stay on Top","publisher":"sentinelone.com","url":"https://www.sentinelone.com/labs/agent-tesla-old-rat-uses-new-tricks-to-stay-on-top/","date":null,"mentions":[{"quote":"Specially-crafted documents, exploiting Office vulnerabilities such as CVE-2017-11882 and CVE-2017-8570, have been leveraged, even in present day campaigns.","start":2709,"end":2865}]}],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2017-17520","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2017-17520","exploited":true,"exploitedSince":"2022-02-25","provenance":"source"},"exploits":[{"id":44263,"url":"https://www.exploit-db.com/exploits/44263","title":"Microsoft Office - 'Composite Moniker Remote Code 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(NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-8570","provenance":"source"},{"date":"2017-07-24","kind":"exploit-public","label":"First public exploit: PoC-in-GitHub; later: Exploit-DB 2018-01-09","url":"https://github.com/temesgeny/ppsx-file-generator","provenance":"source"},{"date":"2017-12-01","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://documents.trendmicro.com/assets/tech-brief-untangling-the-patchwork-cyberespionage-group.pdf","provenance":"source"},{"date":"2018-06-07","kind":"report","label":"Named in volexity.com: Patchwork APT Group Targets US Think Tanks","url":"https://www.volexity.com/blog/2018/06/07/patchwork-apt-group-targets-us-think-tanks/","provenance":"machine"},{"date":"2021-04-07","kind":"report","label":"Named in Intel 471: EtterSilent: the underground’s new favorite maldoc 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