Vulnerability Details CVE-2026-23666
Improper input validation in .NET Framework allows an unauthorized attacker to deny service over a network.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.013
EPSS Ranking 68.1%
CVSS Severity
CVSS v3 Score 7.5
References
Products affected by CVE-2026-23666
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cpe:2.3:a:microsoft:.net_framework:3.5
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cpe:2.3:a:microsoft:.net_framework:4.6.2
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cpe:2.3:a:microsoft:.net_framework:4.7
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cpe:2.3:a:microsoft:.net_framework:4.7.1
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cpe:2.3:a:microsoft:.net_framework:4.7.2
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cpe:2.3:a:microsoft:.net_framework:4.8
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cpe:2.3:a:microsoft:.net_framework:4.8.1
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cpe:2.3:o:microsoft:windows_10_1607:-
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cpe:2.3:o:microsoft:windows_10_1809:-
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cpe:2.3:o:microsoft:windows_10_21h2:-
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cpe:2.3:o:microsoft:windows_10_22h2:-
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cpe:2.3:o:microsoft:windows_11_22h2:-
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cpe:2.3:o:microsoft:windows_11_23h2:-
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cpe:2.3:o:microsoft:windows_11_24h2:-
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cpe:2.3:o:microsoft:windows_11_25h2:-
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cpe:2.3:o:microsoft:windows_11_26h1:-
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cpe:2.3:o:microsoft:windows_server_2012:-
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cpe:2.3:o:microsoft:windows_server_2012:r2
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cpe:2.3:o:microsoft:windows_server_2022:-
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cpe:2.3:o:microsoft:windows_server_2022_23h2:-
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cpe:2.3:o:microsoft:windows_server_2025:-