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Δ / VULNERABILITY RECORD

CVE-2026-32226.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSMEDIUM / 5.9No severity score in this snapshot.
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSMicrosoft vendor recordModified May 11, 2026

Disclosure summary

Concurrent execution using shared resource with improper synchronization ('race condition') in .NET Framework allows an unauthorized attacker to deny service over a network.

Source-reported weakness categories

CWE-362

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

Microsoft Security Updates (CVRF) · 2026-Apr

Open original source · Updated May 11, 2026

.NET Framework Denial of Service Vulnerability

Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.

Microsoft maximum product score: 5.9

VendorProduct / associationVersion / bounds
Microsoft update guideMicrosoft .NET Framework 4.8 on Windows 10 Version 22H2 for x64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 4.8 on Windows 11 Version 22H2 for x64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation) (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation) (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 4.8 on Windows Server 2012 R2 (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for ARM64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8 on Windows Server, version 20H2 (Server Core Installation) (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8 on Windows 11 version 21H2 for x64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for ARM64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for 32-bit Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for x64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 4.7.2 on Windows 10 Version 1809 for 32-bit Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 4.7.2 on Windows 10 Version 1809 for x64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 4.8.1 on Windows Server 2022 (Server Core installation) (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for 32-bit Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for ARM64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for x64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 22H2 for ARM64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 22H2 for x64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022, 23H2 Edition (Server Core installation) (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 23H2 for x64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 24H2 for ARM64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 24H2 for x64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 on Windows Server 2012 R2 (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation) (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows 11 version 26H1 for x64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 26H1 for ARM64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 (Server Core installation) (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for x64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for ARM64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for 32-bit Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 (Server Core installation) (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 (Server Core installation) (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 (Server Core installation) (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for x64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for ARM64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for 32-bit Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 25H2 for ARM64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 25H2 for x64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 23H2 for ARM64-based Systems (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 on Windows Server 2012 (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation) (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2025 (Server Core installation) (MSRC status code 3)
Microsoft update guideMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2025 (MSRC status code 3)

Vendor remediation references

  • 5082426 · build 2.0.50727.9181 & 3.0.30729.9165 & 4.8.4801.0 · product IDs 11650-12097, 11676-11803, 11676-11926, 11676-12097, 11676-12098, 11676-12099
  • Vendor guidance · product IDs 11650-12097, 11676-11803, 11676-11926, 11676-12097, 11676-12098, 11676-12099
  • 5082426 · product IDs 11650-12097, 11676-11803, 11676-11926, 11676-12097, 11676-12098, 11676-12099
  • 5082424 · build 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 · product IDs 11650-12086, 12079-12085, 12079-12086, 12079-12243, 12079-12242
  • Vendor guidance · product IDs 11650-12086, 12079-12085, 12079-12086, 12079-12243, 12079-12242
  • 5082411 · build 4.8.4801.0 · product IDs 11650-10853, 11650-10543
  • Vendor guidance · product IDs 11650-10853, 11650-10543
  • 5082403 · build 4.8.4801.0 · product IDs 11650-10379
  • Vendor guidance · product IDs 11650-10379
  • 5082404 · build 4.8.4801.0 · product IDs 11650-10483
  • Vendor guidance · product IDs 11650-10483
  • 5082414 · build 2.0.50727.9068 & 3.0.30729.9065 & 4.8.4801.0 · product IDs 11676-11569, 11676-11568, 11676-11570
  • Vendor guidance · product IDs 11676-11569, 11676-11568, 11676-11570
  • 5082419 · build 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 · product IDs 11676-11930, 11676-11929, 11676-11931, 12079-11929, 12079-11930, 12079-11931, 12079-12097, 12079-12098, 12079-12099
  • Vendor guidance · product IDs 11676-11930, 11676-11929, 11676-11931, 12079-11929, 12079-11930, 12079-11931, 12079-12097, 12079-12098, 12079-12099
  • 5082419 · product IDs 11676-11930, 11676-11929, 11676-11931, 12079-11929, 12079-11930, 12079-11931, 12079-12097, 12079-12098, 12079-12099
  • 5082413 · build 2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0 · product IDs 11677-11569, 11677-11570, 11862-11568, 11862-11569, 11862-11570, 11677-11568
  • Vendor guidance · product IDs 11677-11569, 11677-11570, 11862-11568, 11862-11569, 11862-11570, 11677-11568
  • 5082425 · build 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 · product IDs 12078-11924, 12079-11923, 12079-11924
  • Vendor guidance · product IDs 12078-11924, 12079-11923, 12079-11924
  • 5082418 · build 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 · product IDs 12079-12244
  • Vendor guidance · product IDs 12079-12244
  • 5082420 · build 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 · product IDs 12079-12389, 12079-12390
  • Vendor guidance · product IDs 12079-12389, 12079-12390
  • 5082406 · build 2.0.50727.8982 & 3.0.30729.8976 · product IDs 2472-10483, 2472-10543
  • Vendor guidance · product IDs 2472-10483, 2472-10543
  • 5082421 · build 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 · product IDs 12079-20853, 12079-20854
  • Vendor guidance · product IDs 12079-20853, 12079-20854
  • 5082427 · build 2.0.50727.9181 & 3.0.30729.9165 & 4.8.4801.0 · product IDs 11676-11923, 11676-11924
  • Vendor guidance · product IDs 11676-11923, 11676-11924
  • 5082400 · build 4.8.4801.0 · product IDs 11863-10379, 11863-10378
  • Vendor guidance · product IDs 11863-10379, 11863-10378
  • 5082402 · build 4.7.4141.0 · product IDs 11863-10543, 11863-10483
  • Vendor guidance · product IDs 11863-10543, 11863-10483
  • 5082417 · build 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 · product IDs 12079-20437, 12079-20438, 12079-12437, 12079-12436
  • Vendor guidance · product IDs 12079-20437, 12079-20438, 12079-12437, 12079-12436
  • 5082398 · build 2.0.50727.8982 & 3.0.30729.8976 · product IDs 2472-10378, 2472-10379
  • Vendor guidance · product IDs 2472-10378, 2472-10379

Original records & references

PUBLISHED 2026-04-14T03:00:00-04:00
MODIFIED 2026-05-11T03:00:00-04:00
INGESTED 2026-10-08T12:45:05-04:00