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TI-2026-39047 Aliases CVE-2026-54123GHSA-r3qc-9p9g-q746

Microsoft Defender for Endpoint for Mac Information Disclosure Vulnerability

Priority LOW 25CWE-200Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from Microsoft.

Summary

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00479 41st percentileScored 2026-11-07
Fix Fixed Microsoft Defender for Endpoint for Mac (Microsoft): 101.26042.0020

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftMicrosoft Defender for Endpoint for Mac101.0.0 to before 101.26042.0020101.26042.0020Patch availableCNA
  • Microsoft Defender for Endpoint for Mac VendorMicrosoft Affected 101.0.0 to before 101.26042.0020 Fixed in 101.26042.0020 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:defender_for_endpoint:*:*:*:*:*:macos:*:*101.0.0 to before 101.26042.0020VulnerableMicrosoft
  • cpe:2.3:a:microsoft:defender_for_endpoint:*:*:*:*:*:macos:*:* Versions 101.0.0 to before 101.26042.0020 Vulnerable ·Microsoft

Remediation

  • Fix · CNA Microsoft Defender for Endpoint for Mac (Microsoft) Fixed in 101.26042.0020

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Information Disclosure
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely
ProductStatusPlan or fix
Microsoft Defender for Endpoint for MacFixed 101.26042.0020 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-54123
  2. 2026-10-03 Alias added: GHSA-r3qc-9p9g-q746

References

Patch 1

  • TI-2026-17389 Microsoft Defender for Endpoint Linux Extension Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
  • TI-2024-32723 Microsoft Defender for Endpoint on Android Spoofing Vulnerability CVSS 3.1HIGH 8.1
  • TI-2025-29747 Microsoft Defender for Endpoint Elevation of Privilege Vulnerability CVSS 3.1HIGH 7.8
  • TI-2024-14076 Microsoft Defender for Endpoint Protection Elevation of Privilege Vulnerability CVSS 3.1HIGH 7.8
  • TI-2022-16269 Microsoft Defender for Endpoint for Mac Elevation of Privilege Vulnerability CVSS 3.1HIGH 7.8
  • TI-2026-40552 Microsoft Defender for Endpoint for Mac Elevation of Privilege Vulnerability CVSS 3.1HIGH 7.0
See all 15 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences