Vulnerability-Lookup

GHSA-C8GQ-RHQH-WGWM

Vulnerability from github – Published: 2026-03-10 18:31 – Updated: 2026-03-11 19:54

Summary

Duplicate Advisory: .NET Denial of Service Vulnerability

Details

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-73j8-2gch-69rq. This link is maintained to preserve external references.

Original Description

Out-of-bounds read in .NET allows an unauthorized attacker to deny service over a network.

Severity ?

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "Microsoft.Bcl.Memory"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "9.0.0"
            },
            {
              "last_affected": "9.0.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-11T19:54:00Z",
    "nvd_published_at": "2026-03-10T18:18:41Z",
    "severity": "HIGH"
  },
  "details": "### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-73j8-2gch-69rq. This link is maintained to preserve external references.\n\n### Original Description\nOut-of-bounds read in .NET allows an unauthorized attacker to deny service over a network.",
  "id": "GHSA-c8gq-rhqh-wgwm",
  "modified": "2026-03-11T19:54:00Z",
  "published": "2026-03-10T18:31:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26127"
    },
    {
      "type": "WEB",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26127"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Duplicate Advisory: .NET Denial of Service Vulnerability",
  "withdrawn": "2026-03-11T19:54:00Z"
}

CVE-2026-26127 (GCVE-0-2026-26127)

Vulnerability from cvelistv5 – Published: 2026-03-10 17:05 – Updated: 2026-03-12 16:51

Title

.NET Denial of Service Vulnerability

Summary

Out-of-bounds read in .NET allows an unauthorized attacker to deny service over a network.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

CWE

CWE-125 - Out-of-bounds Read

Assigner

microsoft

References

URL

Tags

https://msrc.microsoft.com/update-guide/vulnerabi…

vendor-advisorypatch

Impacted products

Vendor

Product

Version

Microsoft

.NET 10.0

Affected: 10.0.0 , < 10.0.4 (custom)

Microsoft	.NET 9.0	Affected: 9.0.0 , < 9.0.14 (custom)
Microsoft	Microsoft.Bcl.Memory	Affected: 10.0.0 , < 10.0.4 (custom)
Microsoft	Microsoft.Bcl.Memory	Affected: 9.0.0 , < 9.0.14 (custom)

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-26127",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-10T18:01:20.286864Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-10T18:01:26.809Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": ".NET 10.0",
          "vendor": "Microsoft",
          "versions": [
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              "lessThan": "10.0.4",
              "status": "affected",
              "version": "10.0.0",
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            }
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        },
        {
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            }
          ]
        },
        {
          "product": "Microsoft.Bcl.Memory",
          "vendor": "Microsoft",
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        },
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          "product": "Microsoft.Bcl.Memory",
          "vendor": "Microsoft",
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              "lessThan": "9.0.14",
              "status": "affected",
              "version": "9.0.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:microsoft:Bcl_memory:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "10.0.4",
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                },
                {
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                },
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                },
                {
                  "criteria": "cpe:2.3:a:microsoft:Bcl_memory:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "9.0.14",
                  "versionStartIncluding": "9.0.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
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      ],
      "datePublic": "2026-03-10T14:00:00.000Z",
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          "lang": "en-US",
          "value": "Out-of-bounds read in .NET allows an unauthorized attacker to deny service over a network."
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      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C",
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          },
          "format": "CVSS",
          "scenarios": [
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              "value": "GENERAL"
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      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-125",
              "description": "CWE-125: Out-of-bounds Read",
              "lang": "en-US",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-12T16:51:19.914Z",
        "orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
        "shortName": "microsoft"
      },
      "references": [
        {
          "name": ".NET Denial of Service Vulnerability",
          "tags": [
            "vendor-advisory",
            "patch"
          ],
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26127"
        }
      ],
      "title": ".NET Denial of Service Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
    "assignerShortName": "microsoft",
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    "datePublished": "2026-03-10T17:05:10.752Z",
    "dateReserved": "2026-02-11T15:52:13.912Z",
    "dateUpdated": "2026-03-12T16:51:19.914Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

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