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Windows StateRepository CVE-2026-49170

| EUVDEUVD-2026-43982 HIGH
Insufficient Granularity of Access Control (CWE-1220)
2026-07-14 microsoft GHSA-8h23-vphm-42cr
7.8
CVSS 3.1 · Vendor: microsoft
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Severity by source

Vendor (microsoft) PRIMARY
7.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
7.8 HIGH

Local EoP requiring an existing low-privileged account (AV:L, PR:L) with no user interaction and low complexity, yielding full SYSTEM-level compromise (C/I/A:H), scope unchanged.

3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (microsoft).

CVSS VectorVendor: microsoft

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Jul 14, 2026 - 17:41 vuln.today
CVE Published
Jul 14, 2026 - 17:04 nvd
HIGH 7.8

DescriptionCVE.org

Insufficient granularity of access control in Windows StateRepository API allows an authorized attacker to elevate privileges locally.

AnalysisAI

Local privilege escalation in the Windows StateRepository API lets an already-authenticated low-privileged user gain higher (typically SYSTEM-level) privileges due to insufficiently granular access control (CWE-1220). It affects a broad range of currently supported Windows client and server builds (Windows 10 1809 through Windows 11 26H1, and Windows Server 2019/2022/2025). …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain low-privileged local account
Delivery
Execute code calling StateRepository API
Exploit
Abuse insufficient access-control granularity
Execution
Elevate to SYSTEM privileges
Impact
Establish persistence or tamper with host

Vulnerability AssessmentAI

Exploitation Requires the attacker to already have local, authenticated access to the target Windows system with at least low-level privileges (PR:L) and the ability to execute code that calls the Windows StateRepository API; there is no network vector (AV:L) and no user interaction is needed (UI:N). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, base 7.8) describes a locally exploitable, low-complexity flaw requiring only low existing privileges and no user interaction, with high impact to confidentiality, integrity, and availability - a classic reliable EoP profile. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who already has a low-privileged foothold on a Windows host - for example a standard domain user on a shared workstation or an RDP session on a terminal server, or a low-integrity process from a prior compromise - invokes the StateRepository API in a way its coarse access-control checks fail to restrict, and escalates to SYSTEM. From there they install persistence, tamper with system state, or move laterally. …
Remediation Patch available per vendor advisory - apply the Microsoft security update that addresses CVE-2026-49170 for your specific Windows build via Windows Update or WSUS/SCCM/Intune; consult https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49170 for the exact KB and build numbers per SKU (no exact fix build number was provided in the input, so pull the precise KB from the MSRC page for your version). … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Inventory all Windows 10 (build 1809 and later), Windows 11, and Windows Server 2019/2022/2025 systems; locate the relevant Microsoft KB article and specific cumulative update version for each OS build affected. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-49170 vulnerability details – vuln.today

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