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CVE-2023-36884 is a Windows Search remote code execution vulnerability initially described as an Office and Windows HTML vulnerability. Observed exploitation used crafted Office Open XML documents containing embedded RTF content imported through AltChunk. Linked OLE objects retrieved external resources, initiating an HTML redirection chain that abused Windows Search archive extraction and Windows security-zone transitions to execute an attacker-controlled payload. Storm-0978, also known as RomCom, exploited the vulnerability as a zero-day in phishing campaigns against entities in Europe and North America. Analysis of the exploitation chain also identified a separate Mark-of-the-Web bypass, CVE-2023-36584.
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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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56 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A remote code execution vulnerability exploited by Storm-0978 through phishing documents targeting government entities in Europe and North America. Malicious OOXML documents embed RTF content using AltChunk; linked objects and successive redirects lead to Windows search files and malware payloads. The article reports that an August 8, 2023 Microsoft Office defense-in-depth update breaks the exploitation chain.
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.
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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.