Windows Defender Attack Surface Reduction Security Feature Bypass
Priority LOW 37Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Security bypass
- 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
Windows Defender Attack Surface Reduction Security Feature Bypass
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00657 51st percentileScored 2026-11-07
Fix Fixed Microsoft Defender Security Intelligence Updates (Microsoft): 1.391.1332.0
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | Microsoft Defender Security Intelligence Updates | 1.0.0 to before 1.391.1332.0 | 1.391.1332.0 | Patch available | CNA |
- Microsoft Defender Security Intelligence Updates VendorMicrosoft Affected 1.0.0 to before 1.391.1332.0 Fixed in 1.391.1332.0 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:windows_defender_security_intelligence_updates:*:*:*:*:*:*:*:* | 1.0.0 to before 1.391.1332.0 | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:windows_defender_security_intelligence_updates:*:*:*:*:*:*:*:* Versions 1.0.0 to before 1.391.1332.0 Vulnerable ·Microsoft
Remediation
- Fix · CNA Microsoft Defender Security Intelligence Updates (Microsoft) Fixed in 1.391.1332.0
Vendor assessments
Microsoft
Microsoft's page for this CVE →
- Impact
- Security Feature Bypass
- Exploited
- No
- Publicly disclosed
- No
- Exploitability
- Exploitation Less Likely
| Product | Status | Plan or fix |
|---|---|---|
| Microsoft Defender Security Intelligence Updates | Fixed | 1.391.1332.0 · Security Update |
Timeline
- 2026-10-02 Threatist record created from CVE-2023-38163
- 2026-10-03 Alias added: GHSA-h6jp-hfh4-mxpq
- 2026-10-11 EPSS moved to the 50th–90th percentile
References
Sources
- CVE-2023-38163 · CVE Program
- CVE-2023-38163 · NVD
- FIRST EPSS
- GHSA-h6jp-hfh4-mxpq · GitHub Advisory Database · CC BY 4.0
- CVE-2023-38163 · Microsoft Security Update Guide
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences