CVE-2026-50646 (GCVE-0-2026-50646)

Vulnerability from cvelistv5 – Published: 2026-07-14 19:29 – Updated: 2026-08-28 17:53
VLAI
Title
.NET Framework Remote Code Execution Vulnerability
Summary
Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-15 03:57 UTC
CWE
  • CWE-693 - Protection Mechanism Failure
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version CPE status
Microsoft .NET 8.0 Affected: 8.0.0 , < 8.0.29 (custom)
guessed Create a notification for this product.
Microsoft .NET 9.0 Affected: 9.0.0 , < 9.0.18 (custom)
guessed Create a notification for this product.
Microsoft Microsoft .NET Framework 3.5 Affected: 3.5.0 , < 2.0.50727.8983 & 3.0.30729.8978 (custom)
guessed Create a notification for this product.
Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 Affected: 4.7.0 , < 2.0.50727.8983 & 3.0.30729.8978 & 4.7.4143.0 (custom)
guessed Create a notification for this product.
Microsoft Microsoft .NET Framework 3.5 AND 4.8 Affected: 4.8.0 , < 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0 (custom)
guessed Create a notification for this product.
Microsoft Microsoft .NET Framework 3.5 AND 4.8.1 Affected: 4.8.1 , < 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0 (custom)
guessed Create a notification for this product.
Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 Affected: 4.7.0 , < 4.7.4143.0 (custom)
guessed Create a notification for this product.
Microsoft Microsoft .NET Framework 4.8 Affected: 4.8.0 , < 4.8.4803.0 (custom)
guessed Create a notification for this product.
Microsoft Microsoft Visual Studio 2022 version 17.12 Affected: 17.12.0 , < 17.12.22 (custom)
guessed Create a notification for this product.
Microsoft Microsoft Visual Studio 2022 version 17.14 Affected: 17.14.0 , < 17.14.36 (custom)
guessed Create a notification for this product.
Microsoft Microsoft Visual Studio 2026 version 18.7 Affected: 18.0 , < 18.7.4 (custom)
guessed Create a notification for this product.
Date Public
2026-07-14 14:00
Show details on NVD website
To clipboard 

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      "product_status:fixed": "1440",
      "product_status:known_not_affected": "2",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "dotnet: .NET Framework: Local Code Execution via Protection Mechanism Failure",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50646.json",
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{\"criteria\": \"cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"18.7.4\", \"versionStartIncluding\": \"18.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"17.12.22\", \"versionStartIncluding\": \"17.12.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"17.14.36\", \"versionStartIncluding\": \"17.14.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"2.0.50727.8983 \u0026 3.0.30729.8978\", \"versionStartIncluding\": \"3.5.0\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"shortName\": \"microsoft\", \"dateUpdated\": \"2026-08-28T17:53:57.374Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-50646\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-28T17:53:57.374Z\", \"dateReserved\": \"2026-06-05T14:33:50.830Z\", \"assignerOrgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"datePublished\": \"2026-07-14T19:29:56.821Z\", \"assignerShortName\": \"microsoft\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Tags
Taxonomy of the tags.





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.