Elevation of Privilege Vulnerability in Microsoft Malware Protection Engine
CVE-2026-69414

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft Malware Protection Engine
Vendor
CVE Published:
14 August 2026

Badges

👾 Exploit Exists🟡 Public PoC📰 News Worthy

What is CVE-2026-69414?

A significant vulnerability has been identified within the Microsoft Malware Protection Engine used in Microsoft Defender, allowing for elevation of privilege. This may potentially enable attackers to gain elevated privileges on affected systems. Microsoft is actively working on a security update to resolve this issue and will provide further information upon its release. Organizations using Microsoft Defender should stay vigilant and apply updates promptly to mitigate risks associated with this vulnerability.

Affected Version(s)

Microsoft Malware Protection Engine 1.1.0.0 < 1.1.26080.3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

ShieldBreak
Created by 1neptune

News Articles

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • 📰

    First article discovered by BleepingComputer

  • Vulnerability published

  • Vulnerability Reserved

.