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CVE-2026-56178

Microsoft Defender for Endpoint for Mac Elevation of Privilege Vulnerability

HIGH
7
CVSS Score
Published: July 14, 2026 at 05:09 PM UTC
Updated: October 28, 2026 at 08:06 PM UTC
1 product affected across 1 vendorDefender for Endpoint

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Severity
HIGH7
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

Time-of-check time-of-use (toctou) race condition in Microsoft Defender for Endpoint allows an authorized attacker to elevate privileges locally.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Defender for Endpoint· Microsoft
95%
101.0.0 ≤ v < 101.26042.0020101.0.0
Affected range stops below 101.26042.0020, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor AdvisoryPatch
Source: cverecord
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56178

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7HIGH[email protected]
Attack Vector
LOCAL
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-367

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