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CVE-2023-36884 is a remote code execution vulnerability in the Windows HTML platform that affects Microsoft Windows and Microsoft Office. It was exploited in the wild via specially crafted Microsoft Office documents, particularly Word documents delivered through spearphishing. The flaw enables attackers to leverage Office content to invoke the vulnerable Windows HTML handling path and execute attacker-controlled code. Public reporting also described related abuse as bypassing built-in Office and Windows security mechanisms, including protections intended to warn users before opening untrusted content. Observed exploitation was linked to Storm-0978 (RomCom) campaigns targeting government, defense, and Ukraine-related organizations in Europe and North America.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (4 hidden).
This repository provides a proof-of-concept exploit for CVE-2023-36884, a Microsoft Office remote code execution vulnerability exploited via crafted OOXML (DOCX) documents. The main script, 'gen_docx_with_rtf_altchunk.py', automates the creation of a DOCX file containing an RTF altChunk. The RTF file is modified to include a linked OLE object pointing to an attacker-controlled URL (such as an HTTP server or SMB share). When a victim opens the generated DOCX in Microsoft Office, the application processes the altChunk and the OLE object, potentially triggering remote code execution or leaking NTLM hashes to the attacker's server. The repository consists of a Python script for document generation and a README with usage instructions and background on the vulnerability. No weaponized payload is included; the exploit demonstrates the document crafting technique rather than delivering a full attack chain.
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50 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An Office and Windows HTML remote code execution vulnerability mentioned as related analytic-story context only.
An Office and Windows HTML remote code execution vulnerability mentioned as an associated analytic story, not the primary focus of the detection content.
A remote code execution vulnerability affecting Microsoft Office and Windows HTML handling, mentioned only as an associated analytic story.
An Office and Windows HTML remote code execution vulnerability referenced only as an associated analytic story, not the main subject of the detection.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.