Skip to content
Heist/ feed
Medium

.NET Information Disclosure Vulnerability

Type: advisorySource: Official CVE List1 source record

Origin validation error in .NET allows an unauthorized attacker to disclose information over a network.

Announced Source revision 1
Original source ↗

CVE-2026-58649

Primary source · Revision 1

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-2026-58649

.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": "10.0.111, 10.0.400",
        "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": "8.0.130, 8.0.424",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": ".NET 9.0",
    "versions": [
      {
        "status": "affected",
        "version": "9.0.0",
        "lessThan": "9.0.120, 9.0.317",
        "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-2026-58649

Source reference: /cveMetadata/cveId

Publisher severity

medium

Source reference: /containers/cna/metrics

Event
#25617 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement