CVE-2023-21803
Windows iSCSI Discovery Service Remote Code Execution Vulnerability
Windows iSCSI Discovery Service Remote Code Execution Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Windows iSCSI Discovery Service Remote Code Execution Vulnerability
Windows iSCSI Discovery Service Remote Code Execution Vulnerability
- Record
CVE-2023-21803- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Weakness
- CWE-190
- Updated
- 2026-11-02
EUVDEUVD-2023-25970
Windows iSCSI Discovery Service Remote Code Execution Vulnerability
- Record
EUVD-2023-25970- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-rjwv-mm96-c3w9
Windows iSCSI Discovery Service Remote Code Execution Vulnerability
Windows iSCSI Discovery Service Remote Code Execution Vulnerability
- Record
GHSA-rjwv-mm96-c3w9- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
NVD
Windows iSCSI Discovery Service Remote Code Execution Vulnerability
- Record
CVE-2023-21803- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
Affected products
- microsoft windows 10 version 1507
- microsoft windows 10 version 1607
- microsoft windows 10 version 1809
- microsoft windows 10 version 20h2
- microsoft windows 10 version 21h2
- microsoft windows 10 version 22h2
- microsoft windows server 2008 service pack 2
- microsoft windows server 2008 service pack 2 (server core installation)
- microsoft windows 10
- microsoft windows 10 1607
- microsoft windows 10 1809
- microsoft windows 10 20h2
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History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-21803 is a critical vulnerability (CVSS 9.8) in Microsoft Windows 10 Version 1507, published February 14, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.76%, the 78th percentile. No source names a fixed version.