CVE-2026-69414: Microsoft Defender Elevation of Privilege Vulnerability

highCVSS 7.8CVE-2026-69414

Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "ShieldBreak ". We are working to provide a high quality security update that addresses this vulnerability. We will provide information in this CVE when the update is available.

CSIRTS triage

vendor: Microsoft product: Microsoft Defender Privilege escalation

What: An elevation of privilege vulnerability exists in the Microsoft Malware Protection Engine that allows attackers to gain higher privileges on affected systems.
Who is affected: All users running Microsoft Defender are potentially affected until a patch is released.
Urgency: High severity (CVSS 7.8) with no current public exploitation reported, but remediation should be prioritized once available.
Action: Apply the Microsoft security update for the Malware Protection Engine when released; check Microsoft Security Update Guide for specific patch details.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 7.8
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69414

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-694140.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-69414	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

highCVE-2026-69414: Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in …nvd

Recent advisories for Microsoft Defender Elevation

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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