Improper input validation in Microsoft Windows 10 Servers
Priority CRITICAL 97Exploited in the wildCWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
A remote code execution vulnerability exists when the Windows Shell does not properly validate file paths, aka "Windows Shell Remote Code Execution Vulnerability." This affects Windows 10 Servers, Windows 10.
Why it matters now
Exploitation Active In CISA KEV since 2022-03-25CISA due date 2022-04-15
EPSS 0.72621 99th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Active
- 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 | Windows 10 Servers | version 1709 (Server Core Installation); version 1803 (Server Core Installation) | — | No fix listed | CNA |
| Microsoft | Windows 10 | Version 1703 for 32-bit Systems; Version 1703 for x64-based Systems; Version 1709 for 32-bit Systems; Version 1709 for x64-based Systems; Version 1803 for 32-bit Systems; Version 1803 for x64-based Systems | — | No fix listed | CNA |
- Windows 10 Servers VendorMicrosoft Affected version 1709 (Server Core Installation); version 1803 (Server Core Installation) Fixed in — No fix listed CNA
- Windows 10 VendorMicrosoft Affected Version 1703 for 32-bit Systems; Version 1703 for x64-based Systems; Version 1709 for 32-bit Systems; Version 1709 for x64-based Systems; Version 1803 for 32-bit Systems; Version 1803 for x64-based Systems Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:microsoft:windows_10_1703:-:*:*:*:*:*:x64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_1703:-:*:*:*:*:*:x86:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:x64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:x86:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:x64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:x86:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_1709:-:*:*:*:*:*:x64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_1803:-:*:*:*:*:*:x64:* | not specified by NVD | Vulnerable | Microsoft |
- cpe:2.3:o:microsoft:windows_10_1703:-:*:*:*:*:*:x64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_1703:-:*:*:*:*:*:x86:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:x64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:x86:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:x64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:x86:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_1709:-:*:*:*:*:*:x64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_1803:-:*:*:*:*:*:x64:* Versions not specified by NVD Vulnerable ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2022-03-25 Added to CISA KEV
- 2026-10-02 Threatist record created from CVE-2018-8414
- 2026-10-03 Alias added: GHSA-xg99-mpwj-gf2c
More Microsoft Windows 10 1703 vulnerabilities
- TI-2017-06077 Microsoft Windows XP SP3, Windows XP x64 XP2, Windows Server 2003 SP2, Windows Vista… KEVCVSS 3.1CRITICAL 9.8
- TI-2019-00654 A remote code execution vulnerability exists in the way that the Windows Graphics Device… KEVCVSS 3.1HIGH 8.8
- TI-2018-00765 A remote code execution vulnerability exists in "Microsoft COM for Windows" when it fails… KEVCVSS 3.1HIGH 8.8
- TI-2017-06002 Windows Shell in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8… KEVCVSS 3.1HIGH 8.8
- TI-2018-06276 An elevation of privilege vulnerability exists in Windows when the Win32k component fails… KEVCVSS 3.1HIGH 8.4
- TI-2019-01029 Link following in Microsoft Windows KEVCVSS 3.1HIGH 7.8
Sources
- CVE-2018-8414 · CVE Program
- CVE-2018-8414 · NVD
- CISA Known Exploited Vulnerabilities
- FIRST EPSS
- GHSA-xg99-mpwj-gf2c · 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