.NET Denial of Service Vulnerability
CVE-2026-120796
Summary
Heap-based buffer overflow in Microsoft Defender allows an unauthorized attacker to execute code over a network.
Products covered
Microsoft Malware Protection Engine
Remediation
Release Notes
Vendor-listed fixes
1.1.26040.8
CVEs in this advisory 1
Updates
- Published by Microsoft Security Response Center
The publication date reported by the vendor.
- Updated by Microsoft Security Response Center
The vendor changed the advisory after it was first published.
- Added to SecurityAlert
We collected the advisory from the official source.
- Confirmed at the source
Our collector saw this advisory during a later source check.