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High severity7.5NVD Advisory· Published Feb 14, 2023· Updated Aug 19, 2026

CVE-2023-21819

CVE-2023-21819

Description

Windows Secure Channel Denial of Service Vulnerability

Affected products

16
  • Microsoft/Windows Server 2003cpe-rescue2 versions
    10.0.20348.0+ 1 more
    • (no CPE)range: 10.0.20348.0
    • cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:*
  • Microsoft/Windows 10 1809cpe-rescue2 versions
    10.0.0+ 1 more
    • (no CPE)range: 10.0.0
    • cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*range: <10.0.17763.4010
  • Microsoft/Windows Server 2019cpe-rescue2 versions
    10.0.17763.0+ 1 more
    • (no CPE)range: 10.0.17763.0
    • cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
  • Microsoft/Windows 11 21h2cpe-rescue2 versions
    10.0.0+ 1 more
    • (no CPE)range: 10.0.0
    • cpe:2.3:o:microsoft:windows_11_21h2:*:*:*:*:*:*:*:*range: <10.0.22000.1574
  • Microsoft/Windows 10 16076 versions
    cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*+ 5 more
    • cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*range: <10.0.19042.2604
    • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*range: <10.0.19044.2604
    • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:*range: <10.0.19045.2604
    • (no CPE)range: 10.0.19043.0
    • (no CPE)range: 10.0.19045.0
    • (no CPE)range: 10.0.0
  • Microsoft/Windows Secure Channelllm-fuzzy
  • Microsoft/Windows Server 2019 (Server Core installation)v5
    Range: 10.0.17763.0

Patches

Vulnerability mechanics

References

1

News mentions

0

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