Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
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
Lifecycle Timeline
2DescriptionCVE.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
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. …
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-43982
GHSA-8h23-vphm-42cr