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CVE-2026-50467 is a critical Microsoft Office remote code execution vulnerability. Available reporting describes it as a memory-safety flaw in Office that can be triggered when the application processes a specially crafted Office document, including via the Preview Pane. Advisory information characterizes the issue as a type confusion vulnerability, while other reporting describes it as a use-after-free condition; both descriptions place it in the class of unsafe object or memory handling bugs in Office document parsing or rendering. Successful exploitation allows an unauthorized attacker to execute code locally in the security context of the logged-on user.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical remote code execution vulnerability affecting widely deployed Microsoft Office installations.
A critical remote code execution vulnerability in Microsoft Office, typically triggered by opening a specially crafted document.
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.