CVE-2023-21559
Windows Cryptographic Information Disclosure Vulnerability
Windows Cryptographic Information Disclosure Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Windows Cryptographic Information Disclosure Vulnerability
Windows Cryptographic Information Disclosure Vulnerability
- Record
CVE-2023-21559- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C - Weakness
- CWE-20
- Updated
- 2026-11-02
EUVDEUVD-2023-25726
Windows Cryptographic Information Disclosure Vulnerability
- Record
EUVD-2023-25726- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-9wp9-f4x8-x7ph
Windows Cryptographic Information Disclosure Vulnerability. This CVE ID is unique from CVE-2023...
Windows Cryptographic Information Disclosure Vulnerability. This CVE ID is unique from CVE-2023-21540, CVE-2023-21550.
- Record
GHSA-9wp9-f4x8-x7ph- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
NVD
Windows Cryptographic Information Disclosure Vulnerability
- Record
CVE-2023-21559- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
- microsoft windows 10 version 1809
- microsoft windows 10 version 20h2
- microsoft windows 10 version 21h2
- microsoft windows 10 version 22h2
- microsoft windows 11 version 21h2
- microsoft windows 11 version 22h2
- microsoft windows server 2019
- microsoft windows server 2019 (server core installation)
- microsoft windows server 2022
- microsoft windows 10 1809
- microsoft windows 10 20h2
- microsoft windows 10 21h2
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History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-21559 is a medium vulnerability (CVSS 5.5) in Microsoft Windows 10 Version 1809, published January 10, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.61%, the 49th percentile. No source names a fixed version.