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High

.NET and Visual Studio Elevation of Privilege Vulnerability

Type: advisorySource: Official CVE ListRisk context updated1 source record

Heap-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to elevate privileges over a network.

Announced Source revision 3
Original source ↗
CVE context updated. The publisher announcement is unchanged.

CVE-2026-69439

Primary source · Revision 3

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-69439

.NET 10.0

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

.NET 11.0

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

.NET 8.0

Source reference: /containers/cna/affected/2/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

.NET 9.0

Source reference: /containers/cna/affected/3/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Microsoft Visual Studio 2022 version 17.14

Source reference: /containers/cna/affected/4/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Microsoft Visual Studio 2026 version 18.9

Source reference: /containers/cna/affected/5/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "Microsoft",
    "product": ".NET 10.0",
    "versions": [
      {
        "status": "affected",
        "version": "10.0.0",
        "lessThan": "10.0.12",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": ".NET 11.0",
    "versions": [
      {
        "status": "affected",
        "version": "11.0.0",
        "lessThan": "11.0 RC1",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": ".NET 8.0",
    "versions": [
      {
        "status": "affected",
        "version": "8.0.0",
        "lessThan": "8.0.31",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": ".NET 9.0",
    "versions": [
      {
        "status": "affected",
        "version": "9.0.0",
        "lessThan": "9.0.20",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Visual Studio 2022 version 17.14",
    "versions": [
      {
        "status": "affected",
        "version": "17.14.0",
        "lessThan": "17.14.40",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Visual Studio 2026 version 18.9",
    "versions": [
      {
        "status": "affected",
        "version": "18.9.0",
        "lessThan": "18.9.3",
        "versionType": "custom"
      }
    ]
  }
]
Related CVEs
CVE-2026-69439

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Linked CVE context

These ratings describe the referenced vulnerabilities and products. They are not a severity rating for every application using this dependency.

CVE-2026-69439 · High

dotnet

CVE-2026-69439 · High

dotnet-sdk

Event
#59624 · Revision 3
Added to Heist Feed
Publisher date
Read the original announcement