CVE-2026-23666
.NET Framework Denial of Service Vulnerability
At a glance
- Severity
- HIGH 7.5
- EPSS
- EPSS 1.33 % · percentile 71 (2026-10-28)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- microsoft
- NVD status
- Modified
Description
Improper input validation in .NET Framework allows an unauthorized attacker to deny service over a network.
Scores
| Version | Score | Vector | Scored by |
|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C | microsoft |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | redhat-SADP |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · secure@microsoft.com (Secondary) |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary) |
Weaknesses (CWE)
European references
CERT-FR advisories
Affected configurations (NVD CPE)
cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.8.1:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*
Affected products
References
Sources
