Windows Cryptographic Information Disclosure Vulnerability
Priority LOW 26CWE-20Published · 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 and Microsoft. Impact type from Microsoft.
Summary
Windows Cryptographic Information Disclosure Vulnerability
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00596 48th percentileScored 2026-11-07
Fix Fixed Microsoft: 5 updates
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 to before 10.0.17763.3887 | 10.0.17763.3887 | Patch available | CNA |
| Microsoft | Windows 10 Version 1809 | 10.0.0 to before 10.0.17763.3887 | 10.0.17763.3887 | Patch available | CNA |
| Microsoft | Windows Server 2019 | 10.0.17763.0 to before 10.0.17763.3887 | 10.0.17763.3887 | Patch available | CNA |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 to before 10.0.17763.3887 | 10.0.17763.3887 | Patch available | CNA |
| Microsoft | Windows Server 2022 | 10.0.20348.0 to before 10.0.20348.1487 | 10.0.20348.1487 | Patch available | CNA |
| Microsoft | Windows 10 Version 20H2 | 10.0.0 to before 10.0.19042.2486 | 10.0.19042.2486 | Patch available | CNA |
| Microsoft | Windows 11 version 21H2 | 10.0.0 to before 10.0.22000.1455 | 10.0.22000.1455 | Patch available | CNA |
| Microsoft | Windows 10 Version 21H2 | 10.0.19043.0 to before 10.0.19044.2486 | 10.0.19044.2486 | Patch available | CNA |
| Microsoft | Windows 11 version 22H2 | 10.0.22621.0 to before 10.0.22621.1105 | 10.0.22621.1105 | Patch available | CNA |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 to before 10.0.19045.2486 | 10.0.19045.2486 | Patch available | CNA |
- Windows 10 Version 1809 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.3887 Fixed in 10.0.17763.3887 Patch available CNA
- Windows 10 Version 1809 VendorMicrosoft Affected 10.0.0 to before 10.0.17763.3887 Fixed in 10.0.17763.3887 Patch available CNA
- Windows Server 2019 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.3887 Fixed in 10.0.17763.3887 Patch available CNA
- Windows Server 2019 (Server Core installation) VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.3887 Fixed in 10.0.17763.3887 Patch available CNA
- Windows Server 2022 VendorMicrosoft Affected 10.0.20348.0 to before 10.0.20348.1487 Fixed in 10.0.20348.1487 Patch available CNA
- Windows 10 Version 20H2 VendorMicrosoft Affected 10.0.0 to before 10.0.19042.2486 Fixed in 10.0.19042.2486 Patch available CNA
- Windows 11 version 21H2 VendorMicrosoft Affected 10.0.0 to before 10.0.22000.1455 Fixed in 10.0.22000.1455 Patch available CNA
- Windows 10 Version 21H2 VendorMicrosoft Affected 10.0.19043.0 to before 10.0.19044.2486 Fixed in 10.0.19044.2486 Patch available CNA
- Windows 11 version 22H2 VendorMicrosoft Affected 10.0.22621.0 to before 10.0.22621.1105 Fixed in 10.0.22621.1105 Patch available CNA
- Windows 10 Version 22H2 VendorMicrosoft Affected 10.0.19045.0 to before 10.0.19045.2486 Fixed in 10.0.19045.2486 Patch available CNA
CPE configurations NVD · 17
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:arm64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x86:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:arm64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:x64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:x86:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:arm64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:x64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:x86:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:arm64:* | not specified by NVD | Vulnerable | Microsoft |
- cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:arm64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x86:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:arm64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:x64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:x86:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:arm64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:x64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:x86:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:arm64:* Versions not specified by NVD Vulnerable ·Microsoft
Show 7 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:x64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:x86:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_11_21h2:-:*:*:*:*:*:arm64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_11_21h2:-:*:*:*:*:*:x64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_11_22h2:-:*:*:*:*:*:arm64:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
- cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:x64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:x86:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_11_21h2:-:*:*:*:*:*:arm64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_11_21h2:-:*:*:*:*:*:x64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_11_22h2:-:*:*:*:*:*:arm64:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
Remediation
Microsoft 5 updates
- Security Update
- Windows 11 Version 22H2 for ARM64-based Systems 10.0.22621.1105
- Windows 11 Version 22H2 for x64-based Systems 10.0.22621.1105
- Security Update
- Windows Server 2022 10.0.20348.1487
- Windows Server 2022 (Server Core installation) 10.0.20348.1487
- Security Update
- Windows 11 version 21H2 for ARM64-based Systems 10.0.22000.1455
- Windows 11 version 21H2 for x64-based Systems 10.0.22000.1455
Show 2 more Microsoft updates
- Security Update
- Windows 10 Version 1809 for 32-bit Systems 10.0.17763.3887
- Windows 10 Version 1809 for ARM64-based Systems 10.0.17763.3887
- Windows 10 Version 1809 for x64-based Systems 10.0.17763.3887
- Windows Server 2019 10.0.17763.3887
- Windows Server 2019 (Server Core installation) 10.0.17763.3887
- Security Update
- Windows 10 Version 20H2 for 32-bit Systems 10.0.19042.2486
- Windows 10 Version 20H2 for ARM64-based Systems 10.0.19042.2486
- Windows 10 Version 21H2 for 32-bit Systems 10.0.19044.2486
- Windows 10 Version 21H2 for ARM64-based Systems 10.0.19044.2486
- Windows 10 Version 21H2 for x64-based Systems 10.0.19044.2486
- Windows 10 Version 22H2 for 32-bit Systems 10.0.19045.2486
- Windows 10 Version 22H2 for ARM64-based Systems 10.0.19045.2486
- Windows 10 Version 22H2 for x64-based Systems 10.0.19045.2486
Vendor assessments
Microsoft
Microsoft's page for this CVE →
- Impact
- Information Disclosure
- Exploited
- No
- Publicly disclosed
- —
- Exploitability
- Exploitation Less Likely
Timeline
- 2026-10-02 Threatist record created from CVE-2023-21550
- 2026-10-03 Alias added: GHSA-67mq-45gv-qmp4
References
More Microsoft Windows 10 1809 vulnerabilities
- TI-2026-26194 Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2026-73128 Windows Shell Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2026-17367 MSHTML Framework Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2026-17364 Windows Shell Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2025-24062 Windows SMB Client Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2025-24042 Internet Shortcut Files Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 8.8
Sources
- CVE-2023-21550 · CVE Program
- CVE-2023-21550 · NVD
- FIRST EPSS
- GHSA-67mq-45gv-qmp4 · GitHub Advisory Database · CC BY 4.0
- CVE-2023-21550 · Microsoft Security Update Guide
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences