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CVE.org (no NVD analysis yet)· CNA microsoft

CVE-2026-109468: ASP.NET Core Denial of Service Vulnerability

HighCVSS 7.5 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 30/100)

  • 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: 0.95% (FIRST EPSS); higher than 61.7% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Microsoft Visual Studio 2022 version 17.14 17.14.42; Microsoft Visual Studio 2026 version 18.10 18.10.4; System.Formats.Cbor on .NET 10.0 runtime installed on Linux 10.0.13.

Low priority for now. Upgrade to Microsoft Visual Studio 2022 version 17.14 17.14.42; Microsoft Visual Studio 2026 version 18.10 18.10.4; System.Formats.Cbor on .NET 10.0 runtime installed on Linux 10.0.13 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

Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Published
Oct 15, 2026
Updated
Nov 10, 2026
EPSS
0.9% · 61th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.9%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · microsoft
7.5
NVD has not scored this yet; the score shown is the CNA’s.

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

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-2026-109468

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.

—

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 Microsoft Visual Studio 2022 version 17.14

    • 17.14.0 and later · before 17.14.42affected

  • Microsoft Microsoft Visual Studio 2026 version 18.10

    • 18.10.0 and later · before 18.10.4affected

  • Microsoft System.Formats.Cbor

    • 10.0.0 and later · before 10.0.13affected

Same product

microsoft: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-96230ASP.NET Core Remote Code Execution Vulnerability
    35Monitor
  • CVE-2026-103572Visual Studio Tools for Applications and SQL Server Management Studio Remote Code Execution Vulnerability
    35Monitor
  • CVE-2026-102870ASP.NET Core Remote Code Execution Vulnerability
    35Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-70159Oct 13, 2026 · ASP.NET Core Denial of Service Vulnerability
    30Monitor
  • ← EarlierCVE-2026-70162Oct 13, 2026 · .NET Denial of Service Vulnerability
    23Monitor
  • ← EarlierCVE-2026-70179Oct 13, 2026 · ASP.NET Core Elevation of Privilege Vulnerability
    30Monitor

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
Microsoft Visual Studio 2022 version 17.1417.14.42 · Release NotesMicrosoft (MSRC)
Microsoft Visual Studio 2026 version 18.1018.10.4 · Release NotesMicrosoft (MSRC)
System.Formats.Cbor on .NET 10.0 runtime installed on Linux10.0.13 · Release NotesMicrosoft (MSRC)
System.Formats.Cbor on .NET 10.0 runtime installed on Mac OS10.0.13 · Release NotesMicrosoft (MSRC)
System.Formats.Cbor on .NET 10.0 runtime installed on Windows10.0.13 · Release NotesMicrosoft (MSRC)
System.Formats.Cbor on .NET 8.0 runtime installed on Linux8.0.1 · Release NotesMicrosoft (MSRC)
System.Formats.Cbor on .NET 8.0 runtime installed on Mac OS8.0.1 · Release NotesMicrosoft (MSRC)
System.Formats.Cbor on .NET 8.0 runtime installed on Windows8.0.1 · Release NotesMicrosoft (MSRC)
System.Formats.Cbor on .NET 9.0 runtime installed on Linux9.0.21 · Release NotesMicrosoft (MSRC)
System.Formats.Cbor on .NET 9.0 runtime installed on Mac OS9.0.21 · Release NotesMicrosoft (MSRC)
System.Formats.Cbor on .NET 9.0 runtime installed on Windows9.0.21 · Release NotesMicrosoft (MSRC)

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.

  1. Published
  2. Fix recordedsame day
  3. TodayNov 13, 2026+29 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Variant candidates

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

  • CVE-2026-701592 days apartASP.NET Core Denial of Service Vulnerability
    30Monitor

Not on record for this CVE: patch commit or PR link · researcher credit · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-770 · Allocation of Resources Without Limits or Throttling

CVSS vector

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

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.

Change log

  1. Fix✗ → ✓
  2. SSVC exploitation— → none
  3. Exploit maturity— → none

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