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CVE-2026-40367 is a remote code execution vulnerability in Microsoft Word caused by access of a resource using an incompatible type, i.e., type confusion. Available descriptions also characterize the issue as involving an untrusted pointer dereference. The flaw can be triggered when Word processes a crafted document, and reporting indicates it is among the Office and Word vulnerabilities that can be exploited through the Preview Pane. Successful exploitation allows an unauthorized attacker to achieve code execution in the local context of the affected system.
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What an attacker gets, and what they’ve been doing with it.
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No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Microsoft Office/Word vulnerability exploitable through crafted documents.
An Office/Word vulnerability exploitable via crafted documents.
A Microsoft Word remote code execution vulnerability that can be exploited via the Preview Pane.
A Microsoft Word remote code execution vulnerability that can be exploited via the Preview Pane.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.