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CVE-2026-26113 is a critical remote code execution vulnerability in Microsoft Office caused by an untrusted pointer dereference. The flaw can allow code execution in the context of the affected Office application when crafted content is processed. Multiple reports indicate the vulnerability is reachable through the Office Preview Pane, meaning a specially crafted malicious message or document can trigger exploitation during preview without requiring the victim to fully open the file. Affected product coverage includes multiple Microsoft Office product lines and Microsoft 365 Apps for Enterprise, and vendor updates also list related Microsoft SharePoint product updates as addressing this CVE.
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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.
29 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical remote code execution vulnerability in Microsoft Office that can be triggered by viewing a malicious message in the Preview Pane.
A critical remote code execution vulnerability in Microsoft Office that can be triggered by viewing a malicious message in the Preview Pane.
Microsoft Office remote code execution via malicious document preview in the Preview Pane.
Unknown
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.