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CVE-2025-49697 is a Microsoft Office remote code execution vulnerability caused by a heap-based buffer overflow. Microsoft classifies the weakness as CWE-122. Successful exploitation allows an unauthorized attacker to execute code locally in the context of the affected system. Although categorized as remote code execution, the documented attack vector is local rather than network-based. The vulnerability is associated with Office document processing, and the Preview Pane is identified as an attack vector, indicating that specially crafted Office content can trigger the flaw during rendering or parsing without requiring prior authentication.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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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.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Microsoft Office remote code execution vulnerability affecting Office/365, including Mac versions; Mac patches were not yet available at the time of the report.
A critical heap-based buffer overflow vulnerability in Microsoft Office that allows unauthorized local code execution and may be triggered via the Preview Pane.
A remote code execution vulnerability in Microsoft Office/Microsoft Word.
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.