FKIE_CVE-2026-32226

Vulnerability from fkie_nvd - Published: 2026-04-14 18:17 - Updated: 2026-06-17 10:35
Severity
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Concurrent execution using shared resource with improper synchronization ('race condition') in .NET Framework allows an unauthorized attacker to deny service over a network.
References
secure@microsoft.comhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32226Vendor Advisory
Impacted products
Vendor Product Version
microsoft .net_framework 3.5
microsoft .net_framework 4.7.2
microsoft windows_10_1809 -
microsoft windows_10_1809 -
microsoft .net_framework 3.5
microsoft .net_framework 4.8
microsoft windows_10_1809 -
microsoft windows_10_1809 -
microsoft windows_10_1809 -
microsoft windows_server_20h2 -
microsoft .net_framework 4.8
microsoft windows_10_1607 -
microsoft windows_server_2012 -
microsoft windows_server_2012 r2
microsoft .net_framework 3.5
microsoft .net_framework 4.8.1
microsoft windows_11_26h1 -
microsoft windows_11_26h1 -
microsoft windows_server_2025 -
To clipboard 

{
  "affected": [
    {
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            "Windows 10 Version 21H2 for ARM64-based Systems",
            "Windows 10 Version 21H2 for x64-based Systems",
            "Windows 10 Version 22H2 for 32-bit Systems",
            "Windows 10 Version 22H2 for ARM64-based Systems",
            "Windows 10 Version 22H2 for x64-based Systems",
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  "cveTags": [],
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      "value": "Concurrent execution using shared resource with improper synchronization (\u0027race condition\u0027) in .NET Framework allows an unauthorized attacker to deny service over a network."
    }
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  "id": "CVE-2026-32226",
  "lastModified": "2026-06-17T10:35:23.037",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
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          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
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              "automatable": "no"
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            {
              "technicalImpact": "partial"
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          "role": "CISA Coordinator",
          "timestamp": "2026-04-14T19:03:36.736622Z",
          "version": "2.0.3"
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  "published": "2026-04-14T18:17:31.190",
  "references": [
    {
      "source": "secure@microsoft.com",
      "tags": [
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      ],
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32226"
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  "sourceIdentifier": "secure@microsoft.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-362"
        }
      ],
      "source": "secure@microsoft.com",
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}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.