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TI-2023-18282 Aliases CVE-2023-36422GHSA-m2vm-jcgv-q6x4

Microsoft Windows Defender Elevation of Privilege Vulnerability

Priority LOW 38CWE-426Published · Updated

Key facts

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

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

Summary

Microsoft Windows Defender Elevation of Privilege Vulnerability

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00805 56th percentileScored 2026-11-07
Fix Fixed Windows Defender Antimalware Platform (Microsoft): 4.18.23100.2009

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftWindows Defender Antimalware Platform4.0.0.0 to before 4.18.23100.20094.18.23100.2009Patch availableCNA
  • Windows Defender Antimalware Platform VendorMicrosoft Affected 4.0.0.0 to before 4.18.23100.2009 Fixed in 4.18.23100.2009 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:windows_defender:*:*:*:*:*:*:*:*before 4.18.23100.2009VulnerableMicrosoft
  • cpe:2.3:a:microsoft:windows_defender:*:*:*:*:*:*:*:* Versions before 4.18.23100.2009 Vulnerable ·Microsoft

Remediation

  • Fix · CNA Windows Defender Antimalware Platform (Microsoft) Fixed in 4.18.23100.2009

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Elevation of Privilege
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely
ProductStatusPlan or fix
Windows Defender Antimalware PlatformFixed 4.18.23100.2009 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-36422
  2. 2026-10-03 Alias added: GHSA-m2vm-jcgv-q6x4

References

Patch 1

  • TI-2021-01364 Microsoft Defender Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 7.8
  • TI-2017-06074 Out-of-bounds write in Microsoft Malware Protection Engine KEVCVSS 3.1HIGH 7.8
  • TI-2017-00265 Memory corruption in Microsoft Malware Protection Engine CVSS 3.0HIGH 7.8
  • TI-2018-00915 Out-of-bounds write in Microsoft Windows Defender CVSS 3.1HIGH 8.8
  • TI-2017-06072 Memory corruption in Microsoft Malware Protection Engine CVSS 3.0HIGH 7.8
  • TI-2017-06075 Memory corruption in Microsoft Malware Protection Engine CVSS 3.0HIGH 7.8
See all 27 →

Sources

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