CVE-2023-21550 json
Windows Cryptographic Information Disclosure Vulnerability
published 2023-01-10 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-25717
- cvss
- 5.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 48%
- public exploits
- 0
- none known
Summary
Windows Cryptographic Information Disclosure Vulnerability
Patch / fix
- Microsoft Windows 10 Version 1809 10.0.17763.3887
- Microsoft Windows Server 2019 10.0.17763.3887
- Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.3887
- Microsoft Windows Server 2022 10.0.20348.1487
- Microsoft Windows 10 Version 20H2 10.0.19042.2486
- Microsoft Windows 11 version 21H2 10.0.22000.1455
- Microsoft Windows 10 Version 21H2 10.0.19044.2486
- Microsoft Windows 11 version 22H2 10.0.22621.1105
- Microsoft Windows 10 Version 22H2 10.0.19045.2486
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.60% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.5 | 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 |
| CNA | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Affected products
- Microsoft Windows 10 Version 1809
- Microsoft Windows Server 2019
- Microsoft Windows Server 2019 (Server Core installation)
- Microsoft Windows Server 2022
- Microsoft Windows 10 Version 20H2
- Microsoft Windows 11 version 21H2
- Microsoft Windows 10 Version 21H2
- Microsoft Windows 11 version 22H2
- Microsoft Windows 10 Version 22H2
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2023-21550
vendor-advisory
Sources
- CVE List CVE-2023-21550
- NVD CVE-2023-21550
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.