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NVD / CVE Program· CNA microsoft

CVE-2026-32175: .NET Core Tampering Vulnerability

Noroxi assessment

Priority: Monitor (action score 17/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.71% (FIRST EPSS); higher than 53.5% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: .NET 10.0 installed on Windows 10.0.8; .NET 8.0 installed on Windows 8.0.27; .NET 9.0 installed on Windows 9.0.16.

Low priority for now. Upgrade to .NET 10.0 installed on Windows 10.0.8; .NET 8.0 installed on Windows 8.0.27; .NET 9.0 installed on Windows 9.0.16 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A tampering vulnerability exists when .NET Core improperly handles specially crafted files. An attacker who successfully exploited this vulnerability could write arbitrary files and directories to certain locations on a vulnerable system. However, an attacker would have limited control over the destination of the files and directories. To exploit the vulnerability, an attacker must send a specially crafted file to a vulnerable system. The security update fixes the vulnerability by ensuring .NET Core properly handles files.

MediumCVSS 4.3 · v3.1—No exploit Fix available
Published
May 12, 2026
Updated
Aug 10, 2026
EPSS
0.7% · 53th percentile

Report tools

JSON

Action score

17

Monitor

Low priority for now.

CVSS
17 / 40 · 4.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.7%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · microsoft
4.3
NVD has not scored this yet; the score shown is the CNA’s.

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-32175

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
microsoftvisual studio 2022
microsoftvisual studio 2026
microsoft.net
microsoftwindows

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • microsoft .net8.0.0 and later · before 8.0.27
  • microsoft .net9.0.0 and later · before 9.0.16
  • microsoft visual studio 202217.12.0 and later · before 17.12.20
  • microsoft visual studio 202217.14.0 and later · before 17.14.32
  • microsoft visual studio 202618.5.0 and later · before 18.5.3

Versions reported by the vendor

Affected version ranges reported by the assigning authority (microsoft). Independent of NVD's CPE analysis and usually ahead of it.

  • Microsoft .NET 10.0

    • 10.0.0 and later · before 10.0.8affected

  • Microsoft .NET 8.0

    • 8.0.0 and later · before 8.0.27affected

  • Microsoft .NET 9.0

    • 9.0.0 and later · before 9.0.16affected

  • Microsoft Microsoft Visual Studio 2022 version 17.12

    • 17.12.0 and later · before 17.12.20affected

  • Microsoft Microsoft Visual Studio 2022 version 17.14

    • 17.14.0 and later · before 17.14.32affected

  • Microsoft Microsoft Visual Studio 2026 version 18.5

    • 18.5.0 and later · before 18.5.3affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
NuGetMicrosoft.NetCore.App.Runtime.win-armfrom 10.0.0 · before 10.0.810.0.8
NuGetMicrosoft.NetCore.App.Runtime.win-armfrom 8.0.0 · before 8.0.278.0.27
NuGetMicrosoft.NetCore.App.Runtime.win-armfrom 9.0.0 · before 9.0.169.0.16
NuGetMicrosoft.NetCore.App.Runtime.win-arm64from 10.0.0 · before 10.0.810.0.8
NuGetMicrosoft.NetCore.App.Runtime.win-arm64from 8.0.0 · before 8.0.278.0.27
NuGetMicrosoft.NetCore.App.Runtime.win-arm64from 9.0.0 · before 9.0.169.0.16
NuGetMicrosoft.NetCore.App.Runtime.win-x64from 10.0.0 · before 10.0.810.0.8
NuGetMicrosoft.NetCore.App.Runtime.win-x64from 8.0.0 · before 8.0.278.0.27
NuGetMicrosoft.NetCore.App.Runtime.win-x64from 9.0.0 · before 9.0.169.0.16
NuGetMicrosoft.NetCore.App.Runtime.win-x86from 10.0.0 · before 10.0.810.0.8
NuGetMicrosoft.NetCore.App.Runtime.win-x86from 8.0.0 · before 8.0.278.0.27
NuGetMicrosoft.NetCore.App.Runtime.win-x86from 9.0.0 · before 9.0.169.0.16

Same product

microsoft: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-36758Visual Studio Elevation of Privilege Vulnerability
    39Monitor
  • CVE-2026-71328.NET and Visual Studio Remote Code Execution Vulnerability
    35Monitor
  • CVE-2026-21256GitHub Copilot and Visual Studio Remote Code Execution Vulnerability
    35Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2025-62214Nov 11, 2025 · Visual Studio Remote Code Execution Vulnerability
    26Monitor
  • ← EarlierCVE-2026-21257Feb 10, 2026 · GitHub Copilot and Visual Studio Elevation of Privilege Vulnerability
    32Monitor
  • Later →CVE-2026-32177May 12, 2026 · .NET Elevation of Privilege Vulnerability
    29Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
.NET 10.0 installed on Windows10.0.8 · KB5093446Microsoft (MSRC)
.NET 8.0 installed on Windows8.0.27 · KB5093447Microsoft (MSRC)
.NET 9.0 installed on Windows9.0.16 · KB5093448Microsoft (MSRC)
Microsoft Visual Studio 2022 version 17.1217.12.20 · Release NotesMicrosoft (MSRC)
Microsoft Visual Studio 2022 version 17.1417.14.32 · Release NotesMicrosoft (MSRC)
Microsoft Visual Studio 2026 version 18.518.5.3 · Release NotesMicrosoft (MSRC)
NuGet:Microsoft.NetCore.App.Runtime.win-arm10.0.8Package registry (OSV)
NuGet:Microsoft.NetCore.App.Runtime.win-arm8.0.27Package registry (OSV)
NuGet:Microsoft.NetCore.App.Runtime.win-arm9.0.16Package registry (OSV)
NuGet:Microsoft.NetCore.App.Runtime.win-arm6410.0.8Package registry (OSV)
NuGet:Microsoft.NetCore.App.Runtime.win-arm648.0.27Package registry (OSV)
NuGet:Microsoft.NetCore.App.Runtime.win-arm649.0.16Package registry (OSV)
NuGet:Microsoft.NetCore.App.Runtime.win-x6410.0.8Package registry (OSV)
NuGet:Microsoft.NetCore.App.Runtime.win-x648.0.27Package registry (OSV)
NuGet:Microsoft.NetCore.App.Runtime.win-x649.0.16Package registry (OSV)
NuGet:Microsoft.NetCore.App.Runtime.win-x8610.0.8Package registry (OSV)
NuGet:Microsoft.NetCore.App.Runtime.win-x868.0.27Package registry (OSV)
NuGet:Microsoft.NetCore.App.Runtime.win-x869.0.16Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
low · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-36 · Absolute Path Traversal

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records