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NVD / CVE Program· CNA microsoft

CVE-2025-62567: Windows Hyper-V Denial of Service Vulnerability

MediumCVSS 5.3 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 21/100)

  • 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: 1.1% (FIRST EPSS); higher than 66.2% 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. Special conditions such as timing or configuration are required.
  • Fixed version: Windows 10 Version 1607 for x64-based Systems 10.0.14393.8688; Windows 10 Version 1809 for x64-based Systems 10.0.17763.8146; Windows 10 Version 21H2 for x64-based Systems 10.0.19044.6691.

Low priority for now. Upgrade to Windows 10 Version 1607 for x64-based Systems 10.0.14393.8688; Windows 10 Version 1809 for x64-based Systems 10.0.17763.8146; Windows 10 Version 21H2 for x64-based Systems 10.0.19044.6691 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

Integer underflow (wrap or wraparound) in Windows Hyper-V allows an authorized attacker to deny service over a network.

Published
Dec 9, 2025
Updated
Jun 17, 2026
EPSS
1.1% · 66th percentile

Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · microsoft
5.3
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:3.1/AV:N/AC:H/PR:L/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-2025-62567

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
microsoftwindows 10 1607
microsoftwindows 10 1809
microsoftwindows 10 21h2
microsoftwindows 10 22h2
microsoftwindows 11 23h2
microsoftwindows 11 24h2
microsoftwindows 11 25h2
microsoftwindows server 2012
microsoftwindows server 2016
microsoftwindows server 2019
microsoftwindows server 2022
microsoftwindows server 2022 23h2

and 1 more

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 Windows 10 Version 1607

    • 10.0.14393.0 and later · before 10.0.14393.8688affected

  • Microsoft Windows 10 Version 1809

    • 10.0.17763.0 and later · before 10.0.17763.8146affected

  • Microsoft Windows 10 Version 21H2

    • 10.0.19044.0 and later · before 10.0.19044.6691affected

  • Microsoft Windows 10 Version 22H2

    • 10.0.19045.0 and later · before 10.0.19045.6691affected

  • Microsoft Windows 11 version 22H3

    • 10.0.22631.0 and later · before 10.0.22631.6345affected

  • Microsoft Windows 11 Version 23H2

    • 10.0.22631.0 and later · before 10.0.22631.6345affected

  • Microsoft Windows 11 Version 24H2

    • 10.0.26100.0 and later · before 10.0.26100.7462affected

  • Microsoft Windows 11 Version 25H2

    • 10.0.26200.0 and later · before 10.0.26200.7462affected

  • Microsoft Windows Server 2012 R2

    • 6.3.9600.0 and later · before 6.3.9600.22920affected

  • Microsoft Windows Server 2012 R2 (Server Core installation)

    • 6.3.9600.0 and later · before 6.3.9600.22920affected

  • Microsoft Windows Server 2016

    • 10.0.14393.0 and later · before 10.0.14393.8688affected

  • Microsoft Windows Server 2016 (Server Core installation)

    • 10.0.14393.0 and later · before 10.0.14393.8688affected
Affected versions · NVD (6)

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

  • microsoft windows server 2012r2
  • microsoft windows server 2016before 10.0.14393.8688
  • microsoft windows server 2019before 10.0.17763.8146
  • microsoft windows server 2022before 10.0.20348.4467
  • microsoft windows server 2022 23h2before 10.0.25398.2025
  • microsoft windows server 2025before 10.0.26100.7392

Same product

microsoft: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-33824Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution VulnerabilityKEV
    92Now
  • CVE-2018-8174A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory, aka "Windows VBScript Engine…KEV
    86Now
  • CVE-2026-21510Windows Shell Security Feature Bypass VulnerabilityKEV
    83Now

Published before and after this one in the same product

  • ← EarlierCVE-2025-62455Dec 9, 2025 · Microsoft Message Queuing (MSMQ) Elevation of Privilege Vulnerability
    31Monitor
  • ← EarlierCVE-2025-62565Dec 9, 2025 · Windows File Explorer Elevation of Privilege Vulnerability
    29Monitor
  • Later →CVE-2025-62571Dec 9, 2025 · Windows Installer Elevation of Privilege Vulnerability
    31Monitor

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
Windows 10 Version 1607 for x64-based Systems10.0.14393.8688 · KB5071543Microsoft (MSRC)
Windows 10 Version 1809 for x64-based Systems10.0.17763.8146 · KB5071544Microsoft (MSRC)
Windows 10 Version 21H2 for x64-based Systems10.0.19044.6691 · KB5071546Microsoft (MSRC)
Windows 10 Version 22H2 for x64-based Systems10.0.19045.6691 · KB5071546Microsoft (MSRC)
Windows 11 Version 23H2 for ARM64-based Systems10.0.22631.6345 · KB5071417Microsoft (MSRC)
Windows 11 Version 23H2 for x64-based Systems10.0.22631.6345 · KB5071417Microsoft (MSRC)
Windows 11 Version 24H2 for ARM64-based Systems10.0.26100.7392 · KB5072014Microsoft (MSRC)
Windows 11 Version 24H2 for ARM64-based Systems10.0.26100.7462 · KB5072033Microsoft (MSRC)
Windows 11 Version 24H2 for x64-based Systems10.0.26100.7392 · KB5072014Microsoft (MSRC)
Windows 11 Version 24H2 for x64-based Systems10.0.26100.7462 · KB5072033Microsoft (MSRC)
Windows 11 Version 25H2 for ARM64-based Systems10.0.26200.7392 · KB5072014Microsoft (MSRC)
Windows 11 Version 25H2 for ARM64-based Systems10.0.26200.7462 · KB5072033Microsoft (MSRC)
Windows 11 Version 25H2 for x64-based Systems10.0.26200.7392 · KB5072014Microsoft (MSRC)
Windows 11 Version 25H2 for x64-based Systems10.0.26200.7462 · KB5072033Microsoft (MSRC)
Windows Server 2012 R26.3.9600.22920 · KB5071503Microsoft (MSRC)
Windows Server 2012 R2 (Server Core installation)6.3.9600.22920 · KB5071503Microsoft (MSRC)
Windows Server 201610.0.14393.8688 · KB5071543Microsoft (MSRC)
Windows Server 2016 (Server Core installation)10.0.14393.8688 · KB5071543Microsoft (MSRC)
Windows Server 201910.0.17763.8146 · KB5071544Microsoft (MSRC)
Windows Server 2019 (Server Core installation)10.0.17763.8146 · KB5071544Microsoft (MSRC)
Windows Server 202210.0.20348.4467 · KB5071413Microsoft (MSRC)
Windows Server 202210.0.20348.4529 · KB5071547Microsoft (MSRC)
Windows Server 2022 (Server Core installation)10.0.20348.4467 · KB5071413Microsoft (MSRC)
Windows Server 2022 (Server Core installation)10.0.20348.4529 · KB5071547Microsoft (MSRC)
Windows Server 2022, 23H2 Edition (Server Core installation)10.0.25398.2025 · KB5071542Microsoft (MSRC)
Windows Server 202510.0.26100.7392 · KB5072014Microsoft (MSRC)
Windows Server 202510.0.26100.7462 · KB5072033Microsoft (MSRC)
Windows Server 2025 (Server Core installation)10.0.26100.7392 · KB5072014Microsoft (MSRC)
Windows Server 2025 (Server Core installation)10.0.26100.7462 · KB5072033Microsoft (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.

No dated events beyond publication.

Variant candidates

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

  • CVE-2026-49181217 days apartWindows DHCP Client Elevation of Privilege Vulnerability
    39Monitor
  • CVE-2026-83869308 days apartWindows Domain Name Service Remote Code Execution Vulnerability
    39Monitor
  • CVE-2026-54982217 days apartWindows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability
    35Monitor
  • CVE-2026-71352273 days apartWindows Remote Access Connection Manager Remote Code Execution Vulnerability
    35Monitor
  • CVE-2026-83838308 days apartWindows Bluetooth A2DP driver Elevation of Privilege Vulnerability
    32Monitor
  • CVE-2026-96844308 days apartMicrosoft Bluetooth Driver Elevation of Privilege Vulnerability
    32Monitor

Not on record for this CVE: EPSS history · 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.
  • A low-privileged account is enough.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

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

Weakness class (CWE)

CWE-191 · Integer Underflow (Wrap or Wraparound)

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/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.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

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

All records