GHSA-4qhr-qf46-fcrx: Duplicate Advisory Remote Code Execution Vulnerability

HIGH
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CVSS 8.8
CWE-122
Published
Advisory Summary

GHSA-4qhr-qf46-fcrx is a HIGH (CVSS 8.8) remote code execution vulnerability (CWE-122: Heap-based Buffer Overflow) affecting Duplicate Advisory libraries in the NuGet ecosystem. The issue involves microsoft security advisory cve-2026-71328 – .net and visual studio remote code execution vulnerability. Remediation is available by upgrading affected packages to version 18.9.0-beta1.26405.2.

GHSA-4qhr-qf46-fcrx at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-4qhr-qf46-fcrx
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-122: Heap-based Buffer Overflow
Affected Product Duplicate Advisory
Package Ecosystem NuGet
Published Date
Last Updated

Security Impact

CVSS: 8.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix GHSA-4qhr-qf46-fcrx

To remediate this vulnerability, upgrade all affected Duplicate Advisory dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Microsoft.DiaSymReader.Native fixed: 18.9.0-beta1.26405.2 
Upgrade Microsoft.DiaSymReader.Native to 18.9.0-beta1.26405.2
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for Microsoft.DiaSymReader.Native

How to Check if You Are Affected

To determine whether your application is affected by GHSA-4qhr-qf46-fcrx, inspect your project dependencies for Duplicate Advisory:

inspect dependencies for Microsoft.DiaSymReader.Native

Analyze the terminal output to locate any version of Duplicate Advisory in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 18.9.0-beta1.26405.2), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-122: Heap-based Buffer Overflow, where a heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). In Duplicate Advisory, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-63gh-g2x5-x69v. This link is maintained to preserve external references. ### Original Description Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.

GHSA-4qhr-qf46-fcrx Affected Duplicate Advisory Versions

1 component(s)
Fixed Versions:
18.9.0-beta1.26405.2
Product / Package Ecosystem Affected Versions Fixed Version
Microsoft.DiaSymReader.Native
nuget/Microsoft.DiaSymReader.Native
NuGet
≥ 17.10.0-beta1.24272.1
< 18.9.0-beta1.26405.2
18.9.0-beta1.26405.2

References

NVD — GHSA-4qhr-qf46-fcrx NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-71328
msrc.microsoft.com/update-guide/vulner... WEB
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-71328
www.nuget.org/packages/microsoft.... PACKAGE
https://www.nuget.org/packages/Microsoft.DiaSymReader.Native

Frequently Asked Questions

What is GHSA-4qhr-qf46-fcrx?
GHSA-4qhr-qf46-fcrx is a security vulnerability in Duplicate Advisory involving Microsoft Security Advisory CVE-2026-71328 – .NET and Visual Studio Remote Code Execution Vulnerability under CWE-122: Heap-based Buffer Overflow.
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to 18.9.0-beta1.26405.2 across affected packages: Microsoft.DiaSymReader.Native.
What version fixes GHSA-4qhr-qf46-fcrx?
Upgrading to 18.9.0-beta1.26405.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is Microsoft.DiaSymReader.Native affected?
Yes, Microsoft.DiaSymReader.Native is affected in releases prior to 18.9.0-beta1.26405.2. Upgrade your dependency to 18.9.0-beta1.26405.2 or later.
What is the CVSS score of GHSA-4qhr-qf46-fcrx?
GHSA-4qhr-qf46-fcrx has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with GHSA-4qhr-qf46-fcrx?
GHSA-4qhr-qf46-fcrx is classified under CWE-122: Heap-based Buffer Overflow (A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().).
How can I check NuGet dependencies for GHSA-4qhr-qf46-fcrx?
Run the dependency tree command: 'inspect dependencies for Microsoft.DiaSymReader.Native'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-4qhr-qf46-fcrx",
  "modified" : "2026-09-09T16:01:47Z",
  "published" : "2026-09-08T18:33:08Z",
  "withdrawn" : "2026-09-09T16:01:47Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: Microsoft Security Advisory CVE-2026-71328 – .NET and Visual Studio Remote Code Execution Vulnerability",
  "details" : "### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-63gh-g2x5-x69v. This link is maintained to preserve external references.\n\n### Original Description\nHeap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Microsoft.DiaSymReader.Native"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "17.10.0-beta1.24272.1"
      }, {
        "fixed" : "18.9.0-beta1.26405.2"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 18.9.0-beta1.26405.1"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-71328"
  }, {
    "type" : "WEB",
    "url" : "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-71328"
  }, {
    "type" : "PACKAGE",
    "url" : "https://www.nuget.org/packages/Microsoft.DiaSymReader.Native"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-122" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-09T16:01:47Z",
    "nvd_published_at" : "2026-09-08T18:20:12Z"
  }
}