Windows iSCSI Discovery Service Remote Code Execution Vulnerability
Priority MEDIUM 52CWE-190Published · 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 · CNA. Fix status from CNA and Microsoft. Impact type from Microsoft.
Summary
Windows iSCSI Discovery Service Remote Code Execution Vulnerability
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01765 78th percentileScored 2026-11-07
Fix Fixed Microsoft: 6 updates
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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 1507 | 10.0.10240.0 to before 10.0.10240.19747 | 10.0.10240.19747 | Patch available | CNA |
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 to before 10.0.14393.5717 | 10.0.14393.5717 | Patch available | CNA |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 to before 10.0.17763.4010 | 10.0.17763.4010 | Patch available | CNA |
| Microsoft | Windows 10 Version 20H2 | 10.0.0 to before 10.0.19042.2604 | 10.0.19042.2604 | Patch available | CNA |
| Microsoft | Windows 10 Version 21H2 | 10.0.19043.0 to before 10.0.19044.2604 | 10.0.19044.2604 | Patch available | CNA |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 to before 10.0.19045.2604 | 10.0.19045.2604 | Patch available | CNA |
| Microsoft | Windows Server 2008 Service Pack 2 | 6.0.6003.0 to before 6.0.6003.21915 | 6.0.6003.21915 | Patch available | CNA |
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) | 6.0.6003.0 to before 6.0.6003.21915 | 6.0.6003.21915 | Patch available | CNA |
- Windows 10 Version 1507 VendorMicrosoft Affected 10.0.10240.0 to before 10.0.10240.19747 Fixed in 10.0.10240.19747 Patch available CNA
- Windows 10 Version 1607 VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.5717 Fixed in 10.0.14393.5717 Patch available CNA
- Windows 10 Version 1809 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.4010 Fixed in 10.0.17763.4010 Patch available CNA
- Windows 10 Version 20H2 VendorMicrosoft Affected 10.0.0 to before 10.0.19042.2604 Fixed in 10.0.19042.2604 Patch available CNA
- Windows 10 Version 21H2 VendorMicrosoft Affected 10.0.19043.0 to before 10.0.19044.2604 Fixed in 10.0.19044.2604 Patch available CNA
- Windows 10 Version 22H2 VendorMicrosoft Affected 10.0.19045.0 to before 10.0.19045.2604 Fixed in 10.0.19045.2604 Patch available CNA
- Windows Server 2008 Service Pack 2 VendorMicrosoft Affected 6.0.6003.0 to before 6.0.6003.21915 Fixed in 6.0.6003.21915 Patch available CNA
- Windows Server 2008 Service Pack 2 (Server Core installation) VendorMicrosoft Affected 6.0.6003.0 to before 6.0.6003.21915 Fixed in 6.0.6003.21915 Patch available CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:microsoft:windows_10:*:*:*:*:*:*:x86:* | before 10.0.10240.19747 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* | before 10.0.14393.5717 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* | before 10.0.17763.4010 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:x86:* | before 10.0.19042.2604 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:* | before 10.0.19044.2604 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:* | before 10.0.19045.2604 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:* | not specified by NVD | Vulnerable | Microsoft |
- cpe:2.3:o:microsoft:windows_10:*:*:*:*:*:*:x86:* Versions before 10.0.10240.19747 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* Versions before 10.0.14393.5717 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* Versions before 10.0.17763.4010 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:x86:* Versions before 10.0.19042.2604 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:* Versions before 10.0.19044.2604 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:* Versions before 10.0.19045.2604 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:* Versions not specified by NVD Vulnerable ·Microsoft
Remediation
Microsoft 6 updates
- Security Only
- Windows Server 2008 for 32-bit Systems Service Pack 2 6.0.6003.21915
- Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 6.0.6003.21915
- Windows Server 2008 for x64-based Systems Service Pack 2 6.0.6003.21915
- Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 6.0.6003.21915
- Monthly Rollup
- Windows Server 2008 for 32-bit Systems Service Pack 2 6.0.6003.21915
- Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 6.0.6003.21915
- Windows Server 2008 for x64-based Systems Service Pack 2 6.0.6003.21915
- Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 6.0.6003.21915
- Security Update
- Microsoft .NET Framework 3.5 and 4.6.2 10.0.10240.19747
- Windows 10 for 32-bit Systems 10.0.10240.19747
- Windows 10 for x64-based Systems 10.0.10240.19747
Show 3 more Microsoft updates
- Security Update
- Windows 10 Version 1809 for 32-bit Systems 10.0.17763.4010
- Windows 10 Version 1809 for ARM64-based Systems 10.0.17763.4010
- Windows 10 Version 1809 for x64-based Systems 10.0.17763.4010
- Windows Server 2019 10.0.17763.4010
- Windows Server 2019 (Server Core installation) 10.0.17763.4010
- Security Update
- Microsoft .NET Framework 3.5 AND 4.7.2 10.0.14393.5717
- Windows 10 Version 1607 for 32-bit Systems 10.0.14393.5717
- Windows 10 Version 1607 for x64-based Systems 10.0.14393.5717
- Windows Server 2016 10.0.14393.5717
- Windows Server 2016 (Server Core installation) 10.0.14393.5717
- Security Update
- Windows 10 Version 20H2 for 32-bit Systems 10.0.19042.2604
- Windows 10 Version 20H2 for ARM64-based Systems 10.0.19042.2604
- Windows 10 Version 21H2 for 32-bit Systems 10.0.19044.2604
- Windows 10 Version 21H2 for ARM64-based Systems 10.0.19044.2604
- Windows 10 Version 21H2 for x64-based Systems 10.0.19044.2604
- Windows 10 Version 22H2 for 32-bit Systems 10.0.19045.2604
- Windows 10 Version 22H2 for ARM64-based Systems 10.0.19045.2604
- Windows 10 Version 22H2 for x64-based Systems 10.0.19045.2604
Vendor assessments
Microsoft
Microsoft's page for this CVE →
- Impact
- Remote Code Execution
- Exploited
- No
- Publicly disclosed
- No
- Exploitability
- Exploitation Less Likely
Timeline
- 2026-10-02 Threatist record created from CVE-2023-21803
- 2026-10-03 Alias added: GHSA-rjwv-mm96-c3w9
References
More Microsoft Windows 10 vulnerabilities
- TI-2015-02132 Buffer underflow in atmfd.dll in the Windows Adobe Type Manager Library in Microsoft… KEVCVSS 3.1HIGH 8.8
- TI-2022-10056 Remote Procedure Call Runtime Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
- TI-2022-06273 HTTP Protocol Stack Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
- TI-2019-00906 Remote Desktop Services Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
- TI-2022-15533 Windows Internet Key Exchange (IKE) Protocol Extensions Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
- TI-2015-01587 Mount Manager in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows… KEVCVSS 3.1MEDIUM 6.6
Sources
- CVE-2023-21803 · CVE Program
- CVE-2023-21803 · NVD
- FIRST EPSS
- GHSA-rjwv-mm96-c3w9 · GitHub Advisory Database · CC BY 4.0
- CVE-2023-21803 · Microsoft Security Update Guide
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences