Microsoft Word Use-After-Free Remote Code Execution Vulnerability
CVE-2025-49698 is a Microsoft Word remote code execution vulnerability caused by a use-after-free condition in Microsoft Office Word. Microsoft classifies it under CWE-416. The flaw occurs when Word accesses memory after it has already been freed, which can lead to memory corruption and attacker-controlled code execution. Microsoft states that exploitation can be triggered by convincing a user to open a specially crafted file, and the Preview Pane is also an attack vector. Although titled as a remote code execution vulnerability, the CVSS attack vector is Local because exploitation occurs through local handling of malicious content rather than direct network reachability.
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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.
Mitigation
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Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical Microsoft Word remote code execution vulnerability that is exploitable via Preview Pane and assessed as more likely to be exploited within 30 days.
A critical use-after-free remote code execution vulnerability in Microsoft Office Word that allows an unauthorized attacker to execute code locally, typically via user interaction such as opening a specially crafted file; the Preview Pane is also an attack vector.
A remote code execution use-after-free vulnerability in Microsoft Office/Microsoft Word.
The version that knows your environment.
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.