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Δ / VULNERABILITY RECORD

CVE-2026-54123.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSMEDIUM / 5.5No severity score in this snapshot.
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSMicrosoft vendor recordModified Aug 11, 2026

Disclosure summary

Exposure of sensitive information to an unauthorized actor in Microsoft Defender for Endpoint allows an authorized attacker to disclose information locally.

Source-reported weakness categories

CWE-200

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

Microsoft Security Updates (CVRF) · 2026-Aug

Open original source · Updated Aug 11, 2026

Microsoft Defender for Endpoint for Mac Information Disclosure Vulnerability

Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.

Microsoft maximum product score: 5.5

VendorProduct / associationVersion / bounds
Microsoft update guideMicrosoft Defender for Endpoint for Mac (MSRC status code 3)

Vendor remediation references

  • Release Notes · build 101.26042.0020 · product IDs 12014
  • Vendor guidance · product IDs 12014

Original records & references

PUBLISHED 2026-08-11T03:00:00-04:00
MODIFIED 2026-08-11T03:00:00-04:00
INGESTED 2026-10-08T12:40:33-04:00