CVE-2025-47996

Local privilege escalation via integer underflow

Published Jul 8, 2025 · Updated Feb 26, 2026

Integer underflow in the Windows MBT Transport driver allows local users with low privileges to elevate privileges on affected Windows systems. Microsoft identifies wraparound in the driver but has not disclosed the affected routine or the untrusted value that triggers it. A local authenticated account is required, and successful exploitation grants elevated execution with confidentiality, integrity, and availability impact.

CVSS severity7.8
High
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer underflow in the Windows MBT Transport driver allows local users with low privileges to elevate privileges on affected Windows systems. Microsoft identifies wraparound in the driver but has not disclosed the affected routine or the untrusted value that triggers it. A local authenticated account is required, and successful exploitation grants elevated execution with confidentiality, integrity, and availability impact.

The record

CVE
CVE-2025-47996
Published
Jul 8, 2025
Updated
Feb 26, 2026
Vendor
Microsoft
Product
Windows 10 Version 1507
Classifications
CWE-125, CWE-191, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.10240.0 <10.0.10240.21073

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Windows 10 Version 1507version=10.0.10240.0 <10.0.10240.21073
Microsoft · Windows Server 2019version=10.0.17763.0 <10.0.17763.7558
Microsoft · Windows Server 2025 (Server Core installation)version=10.0.26100.0 <10.0.26100.4652
Microsoft · Windows Server 2016 (Server Core installation)version=10.0.14393.0 <10.0.14393.8246
Microsoft · Windows 11, version 24H2version=10.0.26100.0 <10.0.26100.4652
Microsoft · Windows Server 2012 (Server Core installation)version=6.2.9200.0 <6.2.9200.25573
Microsoft · Windows Server 2012version=6.2.9200.0 <6.2.9200.25573
Microsoft · Windows 10 Version 21H2version=10.0.19044.0 <10.0.19044.6093
Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)version=10.0.25398.0 <10.0.25398.1732
Microsoft · Windows Server 2016version=10.0.14393.0 <10.0.14393.8246
Microsoft · Windows 11 Version 22H3version=10.0.22631.0 <10.0.22631.5624
Microsoft · Windows Server 2008 R2 Service Pack 1version=6.1.7601.0 <6.1.7601.27820
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)version=6.1.7601.0 <6.1.7601.27820
Microsoft · Windows 10 Version 22H2version=10.0.19045.0 <10.0.19045.6093
Microsoft · Windows Server 2012 R2 (Server Core installation)version=6.3.9600.0 <6.3.9600.22676
Microsoft · Windows Server 2019 (Server Core installation)version=10.0.17763.0 <10.0.17763.7558
Microsoft · Windows 11 Version 23H2version=10.0.22631.0 <10.0.22631.5624
Microsoft · Windows 11, version 22H2version=10.0.22621.0 <10.0.22621.5624
Microsoft · Windows 10 Version 1607version=10.0.14393.0 <10.0.14393.8246
Microsoft · Windows Server 2008 Service Pack 2version=6.0.6003.0 <6.0.6003.23418
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.3932
Microsoft · Windows Server 2025version=10.0.26100.0 <10.0.26100.4652
Microsoft · Windows 10 Version 1809version=10.0.17763.0 <10.0.17763.7558
Microsoft · Windows Server 2012 R2version=6.3.9600.0 <6.3.9600.22676
Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)version=6.0.6003.0 <6.0.6003.23418

Published CVSS scores

7.8Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
CWE-191Integer Underflow (Wrap or Wraparound)
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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