CVE-2026-69414CWE-269CWE-284broken-access-controlprivilege-escalation

CVE-2026-69414

High · published August 15, 2026

CVSS v3.1
7.8
EPSS
1%
Percentile
70.6
In the wild
Unconfirmed
What it is

Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "ShieldBreak ".

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01319 · 70.6th percentile
Weaknesses
CWE-269 · Improper Privilege Management; CWE-284 · Improper Access Control
Published
2026-08-15T02:17Z
Affected products (1)
ProductVersionsFixed in
microsoft/malware_protection_engineall versions—
References (2)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69414 · [email protected]https://github.com/MSNightmare/ShieldBreak · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 14 AUG 21:50Z
    Microsoft Defender Elevation of Privilege Vulnerability
    cvelistv5