CVE-2025-47162Microsoft Heap-based Buffer Overflow
NVDCVSS scored by secure@microsoft.com
Vulnerability Summary
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
CVSS v3.1 Base Metrics — Score 8.4 (HIGH)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HAttack VectorLocal
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
Affected & Patched Versions
- Microsoft 365 Apps
- Microsoft Office
- Microsoft Office Long Term Servicing Channel
No patched version published yet
Until a fix ships, reduce exposure:
- Restrict access to the affected service or interface to trusted networks.
- Disable the affected feature if you do not need it.
- Watch the vendor advisory for a firmware or software update.
What to do
Plan remediation soon. No exploitation is confirmed yet, but the severity is high.
- Check whether you run Microsoft and which version.
- No patched version is listed yet. Limit access to the affected service to trusted networks, and disable the feature if you can.
- Subscribe to the vendor advisory so you learn when a fix ships.
Timeline
- Jun 10, 2025Published
- Jul 9, 2025Record last modified
Score, severity and exploitation changes are tracked from the day Watchtower started logging them.
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External References
Data last checked: Nov 14, 2026 18:19 UTC