Skip to content
OpenAdvisories
Critical MSRC-CVE-2026-23666 1 CVE

.NET Framework Denial of Service Vulnerability

Published Apr 14, 2026 · Updated Apr 15, 2026 · Revision 2

Vendor: Microsoft

Summary

Impact: Denial of Service. Microsoft rating: Critical. Not known to be exploited — Exploitation Less Likely. Customer action: Required.

Details

Security updates
4.8.4801.0 — https://support.microsoft.com/help/5082411
4.8.4801.0 — https://support.microsoft.com/help/5082403
4.8.4801.0 — https://support.microsoft.com/help/5082404
2.0.50727.9068 & 3.0.30729.9065 & 4.8.4801.0 — https://support.microsoft.com/help/5082414
2.0.50727.9181 & 3.0.30729.9165 & 4.8.4801.0 — https://support.microsoft.com/help/5082427
2.0.50727.9181 & 3.0.30729.9165 & 4.8.4801.0 — https://support.microsoft.com/help/5082426
2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0 — https://support.microsoft.com/help/5082413
4.8.4801.0 — https://support.microsoft.com/help/5082400
4.7.4141.0 — https://support.microsoft.com/help/5082402
2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 — https://support.microsoft.com/help/5082425
2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 — https://support.microsoft.com/help/5082419
2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 — https://support.microsoft.com/help/5082424
2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 — https://support.microsoft.com/help/5082417
2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 — https://support.microsoft.com/help/5082418
2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 — https://support.microsoft.com/help/5082420
2.0.50727.8982 & 3.0.30729.8976 — https://support.microsoft.com/help/5082398
2.0.50727.8982 & 3.0.30729.8976 — https://support.microsoft.com/help/5082406
2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 — https://support.microsoft.com/help/5082421

Vulnerabilities 1

Revision history

  1. #2

    Updated the executive summary. This is an informational change only.

  2. #1

    Information published.

References