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NVD / CVE Program· CNA microsoft

CVE-2026-105016: Microsoft QUIC Remote Code Execution Vulnerability

CriticalCVSS 9.8 · v3.1—Proof of concept Fix available

Noroxi assessment

Priority: Monitor (action score 39/100)

  • Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.6% (FIRST EPSS); higher than 76.9% 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.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: .NET 10.0 runtime installed on Windows 10.0.14; .NET 11.0 runtime installed on Windows 11.0.0-rc.2.26504.105; .NET 8.0 runtime installed on Windows 8.0.32.

Low priority for now. Upgrade to .NET 10.0 runtime installed on Windows 10.0.14; .NET 11.0 runtime installed on Windows 11.0.0-rc.2.26504.105; .NET 8.0 runtime installed on Windows 8.0.32 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

Heap-based buffer overflow in Microsoft QUIC allows an unauthorized attacker to execute code over a network.

Published
Oct 13, 2026
Updated
Nov 10, 2026
EPSS
1.6% · 76th percentile

Report tools

JSON

Action score

39

Monitor

Low priority for now.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.6%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · microsoft
9.8
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:H/I:H/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
  • Proof of concept exists, no weaponized module
  • A fix has been released

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

Follow CVE-2026-105016

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 .NET 10.0 runtime

    • 10.0.0 and later · before 10.0.14affected

  • Microsoft .NET 11.0 runtime

    • 11.0.0 and later · before 11.0.0-rc.2.26504.105affected

  • Microsoft .NET 8.0 runtime

    • 8.0.0 and later · before 8.0.32affected

  • Microsoft .NET 9.0 runtime

    • 9.0.0 and later · before 9.0.21affected

  • 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 Windows 11 version 23H2

    • 10.0.22631.0 and later · before 10.0.22631.7652affected

  • Microsoft Windows 11 Version 23H2

    • 10.0.22631.0 and later · before 10.0.22631.7652affected

  • Microsoft Windows 11 Version 24H2

    • 10.0.26100.0 and later · before 10.0.26100.9711affected

  • Microsoft Windows 11 Version 25H2

    • 10.0.26200.0 and later · before 10.0.26200.9711affected

  • Microsoft Windows 11 version 26H1

    • 10.0.28000.0 and later · before 10.0.28000.3231affected

  • Microsoft Windows 11 Version 26H2

    • 10.0.26300.0 and later · before 10.0.26300.9711affected

Package-level exposure

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

EcosystemPackageAffected rangeFix
Alpine:v3.22dotnet8-runtimebefore 8.0.32-r08.0.32-r0
Alpine:v3.22dotnet9-runtimebefore 9.0.21-r09.0.21-r0
Alpine:v3.23dotnet10-runtimebefore 10.0.13-r010.0.13-r0
NuGetMicrosoft.Native.Quic.MsQuic.Schannelfrom 2.5.11-ci.156755675 · before 2.5.11-ci.1594170532.5.11-ci.159417053

Same product

microsoft: all records

Other highest-scoring records for the same primary product.

Published before and after this one in the same product

  • ← EarlierCVE-2026-69522Sep 8, 2026 · .NET and Visual Studio Remote Code Execution Vulnerability
    35Monitor
  • Later →CVE-2026-58280Oct 13, 2026 · .NET Denial of Service Vulnerability
    30Monitor
  • Later →CVE-2026-66822Oct 13, 2026 · .NET Information Disclosure Vulnerability
    23Monitor

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 runtime installed on Windows10.0.14 · Release NotesMicrosoft (MSRC)
.NET 11.0 runtime installed on Windows11.0.0-rc.2.26504.105 · Release NotesMicrosoft (MSRC)
.NET 8.0 runtime installed on Windows8.0.32 · KB5130034Microsoft (MSRC)
.NET 9.0 runtime installed on Windows9.0.21 · KB5130035Microsoft (MSRC)
Microsoft Visual Studio 2022 version 17.1417.14.42 · Release NotesMicrosoft (MSRC)
Microsoft Visual Studio 2026 version 18.1018.10.4 · Release NotesMicrosoft (MSRC)
Windows 11 Version 23H2 for ARM64-based Systems10.0.22631.7652 · KB5126653Microsoft (MSRC)
Windows 11 Version 23H2 for x64-based Systems10.0.22631.7652 · KB5126653Microsoft (MSRC)
Windows 11 Version 24H2 for ARM64-based Systems10.0.26100.9711 · KB5127648Microsoft (MSRC)
Windows 11 Version 24H2 for x64-based Systems10.0.26100.9711 · KB5127648Microsoft (MSRC)
Windows 11 Version 25H2 for ARM64-based Systems10.0.26200.9711 · KB5127648Microsoft (MSRC)
Windows 11 Version 25H2 for x64-based Systems10.0.26200.9711 · KB5127648Microsoft (MSRC)
Windows 11 Version 26H1 for ARM64-based Systems10.0.28000.3231 · KB5127646Microsoft (MSRC)
Windows 11 version 26H1 for x64-based Systems10.0.28000.3231 · KB5127646Microsoft (MSRC)
Windows 11 Version 26H2 for ARM64-based Systems10.0.26300.9711 · KB5127648Microsoft (MSRC)
Windows 11 Version 26H2 for x64-based Systems10.0.26300.9711 · KB5127648Microsoft (MSRC)
Windows Server 202210.0.20348.5761 · KB5126655Microsoft (MSRC)
Windows Server 2022 (Server Core installation)10.0.20348.5761 · KB5126655Microsoft (MSRC)
Windows Server 202510.0.26100.33650 · KB5126646Microsoft (MSRC)
Windows Server 2025 (Server Core installation)10.0.26100.33650 · KB5126646Microsoft (MSRC)
alpine:dotnet10-runtime10.0.13-r0 · Alpine:v3.23Package registry (OSV)
alpine:dotnet8-runtime8.0.32-r0 · Alpine:v3.22Package registry (OSV)
alpine:dotnet9-runtime9.0.21-r0 · Alpine:v3.22Package registry (OSV)
NuGet:Microsoft.Native.Quic.MsQuic.Schannel2.5.11-ci.159417053Package registry (OSV)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHubstars:02026-11-11

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. First PoC+28 d
  4. TodayNov 13, 2026+31 d
EPSS, last 120 days+1% in 7 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-2026-6952235 days apart.NET and Visual Studio Remote Code Execution Vulnerability
    35Monitor

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

Weakness class (CWE)

CWE-122 · Heap-based Buffer Overflow

CVSS vector

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

ATT&CK techniques

—

Change log

  1. Exploit maturitynone → poc
  2. Fix✗ → ✓
  3. SSVC exploitation— → none
  4. 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