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Microsoft Word Untrusted Pointer Dereference Remote Code Execution Vulnerability

IdentifiersCVE-2026-33114CWE-822· Untrusted Pointer Dereference

CVE-2026-33114 is a Critical remote code execution vulnerability in Microsoft Office Word caused by an untrusted pointer dereference. The available reporting describes the flaw as affecting Microsoft Word and indicates that exploitation can occur via the Preview Pane attack surface. Supporting sources also state that exploitation results in local code execution, with code from the local machine needing to be executed as part of the exploit chain. No vulnerable function or deeper implementation detail is provided in the supplied content.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation can lead to arbitrary code execution in the context of the affected Word process on the local system. Because the flaw is in Microsoft Word and is described as exploitable through the Preview Pane vector, opening or previewing a malicious document could enable attacker-controlled code execution, subject to the stated local execution requirement.

Mitigation

If you can’t patch tonight, do this now.

Until patching is completed, reduce exposure by disabling or avoiding the Preview Pane for untrusted documents, blocking or filtering untrusted Office/Word files from email and web downloads, and preventing execution of untrusted local code on endpoints. Use Microsoft Office Protected View, application control, and least-privilege controls where feasible. The supplied content does not list an official vendor workaround beyond patching.

Remediation

Patch, then assume compromise.

Apply Microsoft's April 2026 security updates for Microsoft Office Word / Microsoft 365 that address CVE-2026-33114. The provided content does not include KB numbers or version-specific fixed builds, so the exact patched versions are not available from the supplied material.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
Microsoft Corporation365 Appsapplication
Microsoft CorporationOffice 2021application
Microsoft CorporationOffice 2024application
Microsoft CorporationOffice Long Term Servicing Channelapplication
Microsoft CorporationOffice Macos 2021application
Microsoft CorporationOffice Macos 2024application
Microsoft CorporationWordapplication

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What this page doesn’t show

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Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity3

Community discussion across Reddit, Mastodon, and other social sources.