Memory corruption in Microsoft Windows 10 Version 1903 for 32-bit Systems
Priority CRITICAL 100Exploited in the wildCWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Microsoft. Impact type from CWE-119 and the CVSS impact.
Summary
A remote code execution vulnerability exists in the way that the Microsoft Server Message Block 3.1.1 (SMBv3) protocol handles certain requests, aka 'Windows SMBv3 Client/Server Remote Code Execution Vulnerability'.
Why it matters now
Exploitation Active In CISA KEV since 2022-02-10CISA due date 2022-08-10Known ransomware use
EPSS 0.9981 99th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Fixed Microsoft: 1 update
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Active
- Automatable
- Yes
- 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 | Windows 10 Version 1903 for 32-bit Systems | all versions | — | No fix listed | CNA |
| Microsoft | Windows 10 Version 1903 for x64-based Systems | all versions | — | No fix listed | CNA |
| Microsoft | Windows 10 Version 1903 for ARM64-based Systems | all versions | — | No fix listed | CNA |
| Microsoft | Windows Server, version 1903 (Server Core installation) | all versions | — | No fix listed | CNA |
| Microsoft | Windows 10 Version 1909 for 32-bit Systems | all versions | — | No fix listed | CNA |
| Microsoft | Windows 10 Version 1909 for x64-based Systems | all versions | — | No fix listed | CNA |
| Microsoft | Windows 10 Version 1909 for ARM64-based Systems | all versions | — | No fix listed | CNA |
| Microsoft | Windows Server, version 1909 (Server Core installation) | all versions | — | No fix listed | CNA |
- Windows 10 Version 1903 for 32-bit Systems VendorMicrosoft Affected all versions Fixed in — No fix listed CNA
- Windows 10 Version 1903 for x64-based Systems VendorMicrosoft Affected all versions Fixed in — No fix listed CNA
- Windows 10 Version 1903 for ARM64-based Systems VendorMicrosoft Affected all versions Fixed in — No fix listed CNA
- Windows Server, version 1903 (Server Core installation) VendorMicrosoft Affected all versions Fixed in — No fix listed CNA
- Windows 10 Version 1909 for 32-bit Systems VendorMicrosoft Affected all versions Fixed in — No fix listed CNA
- Windows 10 Version 1909 for x64-based Systems VendorMicrosoft Affected all versions Fixed in — No fix listed CNA
- Windows 10 Version 1909 for ARM64-based Systems VendorMicrosoft Affected all versions Fixed in — No fix listed CNA
- Windows Server, version 1909 (Server Core installation) VendorMicrosoft Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:arm64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x86:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:arm64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x86:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_1903:-:*:*:*:*:*:x64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_1909:-:*:*:*:*:*:x64:* | not specified by NVD | Vulnerable | Microsoft |
- cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:arm64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x86:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:arm64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x86:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_1903:-:*:*:*:*:*:x64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_1909:-:*:*:*:*:*:x64:* Versions not specified by NVD Vulnerable ·Microsoft
Remediation
Microsoft 1 update
- Microsoft Guidance for Disabling SMBv3 Compression
Timeline
- 2022-02-10 Added to CISA KEV
- 2026-10-02 Threatist record created from CVE-2020-0796
- 2026-10-03 Alias added: GHSA-vh23-87v3-h8c6
References
Exploit 2
Advisory 4
- http://packetstormsecurity.com/files/156731/CoronaBlue-SMBGhost-Microsoft-Windows-10-SMB-3.1.1-Proof-Of-Concept.html
- http://packetstormsecurity.com/files/156980/Microsoft-Windows-10-SMB-3.1.1-Local-Privilege-Escalation.html
- http://packetstormsecurity.com/files/157901/Microsoft-Windows-SMBGhost-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/158054/SMBleed-SMBGhost-Pre-Authentication-Remote-Code-Execution-Proof-Of-Concept.html
More Microsoft Windows 10 1903 vulnerabilities
- TI-2020-00989 Out-of-bounds write in Microsoft Windows KEVCVSS 3.1HIGH 8.8
- TI-2019-00654 A remote code execution vulnerability exists in the way that the Windows Graphics Device… KEVCVSS 3.1HIGH 8.8
- TI-2020-00578 Improper certificate validation in Microsoft Windows KEVCVSS 3.1HIGH 8.1
- TI-2020-13066 Windows Kernel Local Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 7.8
- TI-2020-01423 Windows Spoofing Vulnerability KEVCVSS 3.1HIGH 7.8
- TI-2020-01023 Win32k Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 7.8
Sources
- CVE-2020-0796 · CVE Program
- CVE-2020-0796 · NVD
- CISA Known Exploited Vulnerabilities
- FIRST EPSS
- GHSA-vh23-87v3-h8c6 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences