Source: Microsoft · Limited verification•Last verified: •Collection Degraded
CVE-2026-83792Unknown / EvaluatingImportant (raw)CVSS 7.8CWE-863
Windows Device Install Service Elevation of Privilege Vulnerability
Published: 13 Oct 2026•Last updated: 13 Oct 2026, 12:30 PM IST•Source identifier: secure@microsoft.com
Dossier completeness: source-provided sections 3 / 3 · rule guidance available. Missing source facts count as incomplete.
CISA KEV catalog
Unknown
KEV status was not determined.
CVSS score
7.8Important (raw)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Metric sourceMicrosoft MSRC CVRF
EPSS probability
0.3%0.003
Percentile20th
Weakness type
CWE-863
No further CWE recorded
Remediation
Patch status unknown
KB5126655, KB5126657, KB5126646, KB5127648, KB5126653, KB5127646
Why It Matters
Analysis dossierWhy It Matters
Incorrect authorization in Windows Device Install Service allows an authorized attacker to elevate privileges locally.
SOC priority
High
Actively exploited
No
Publicly disclosed
Unknown
Risk basis: Microsoft or Microsoft-managed product relevance; HIGH severity; No confirmed exploitation signal in current enrichment
Affected Products & Remediation
20 source-backed productsAffected products and versions (source)
- Windows Server 2022 · version range not provided by source · Microsoft MSRC · Source
- Windows Server 2022 (Server Core installation) · version range not provided by source · Microsoft MSRC · Source
- Windows 10 Version 21H2 for 32-bit Systems · version range not provided by source · Microsoft MSRC · Source
- Windows 10 Version 21H2 for ARM64-based Systems · version range not provided by source · Microsoft MSRC · Source
- Windows 10 Version 21H2 for x64-based Systems · version range not provided by source · Microsoft MSRC · Source
- Windows 10 Version 22H2 for x64-based Systems · version range not provided by source · Microsoft MSRC · Source
- Windows 10 Version 22H2 for ARM64-based Systems · version range not provided by source · Microsoft MSRC · Source
- Windows 10 Version 22H2 for 32-bit Systems · version range not provided by source · Microsoft MSRC · Source
- Windows Server 2025 (Server Core installation) · version range not provided by source · Microsoft MSRC · Source
- Windows 11 Version 25H2 for ARM64-based Systems · version range not provided by source · Microsoft MSRC · Source
- Windows 11 Version 25H2 for x64-based Systems · version range not provided by source · Microsoft MSRC · Source
- Windows 11 Version 23H2 for ARM64-based Systems · version range not provided by source · Microsoft MSRC · Source
- Windows 11 Version 23H2 for x64-based Systems · version range not provided by source · Microsoft MSRC · Source
- Windows 11 Version 24H2 for ARM64-based Systems · version range not provided by source · Microsoft MSRC · Source
- Windows 11 Version 24H2 for x64-based Systems · version range not provided by source · Microsoft MSRC · Source
- Windows Server 2025 · version range not provided by source · Microsoft MSRC · Source
- Windows 11 version 26H1 for x64-based Systems · version range not provided by source · Microsoft MSRC · Source
- Windows 11 Version 26H1 for ARM64-based Systems · version range not provided by source · Microsoft MSRC · Source
- Windows 11 Version 26H2 for ARM64-based Systems · version range not provided by source · Microsoft MSRC · Source
- Windows 11 Version 26H2 for x64-based Systems · version range not provided by source · Microsoft MSRC · Source
Recorded patch / KBKB5126655, KB5126657, KB5126646, KB5127648, KB5126653, KB5127646
Vendor or catalog guidance (source)
- Microsoft MSRC: Install the security update KB5126655 listed by MSRC
- Microsoft MSRC: Install the security update KB5126657 listed by MSRC
- Microsoft MSRC: Install the security update KB5126646 listed by MSRC
- Microsoft MSRC: Install the security update KB5127648 listed by MSRC
- Microsoft MSRC: Install the security update KB5126653 listed by MSRC
Known exploitation (source facts)
Only what a source states. Unknown means no source has said either way; it is not "not exploited".
- CISA KEV
- Unknown
- Exploited (source statement)
- No
- Publicly disclosed (source)
- Unknown
Suggested hunting (rule-based inference)
SecOps Signal recommendation (rule-based inference). These steps are hunting hypotheses from the vulnerability class; they do not state or imply that exploitation occurred here or anywhere.
Matched microsoft-enterprise (Affected product: Windows Server 2022, Vendor: Microsoft); authorization-bypass (CWE-863)
Exposure
- Identify affected Microsoft products and compare local builds with the MSRC advisory.Telemetry: DeviceTvmSoftwareVulnerabilities · The MSRC product/build mapping establishes applicability. · Rule microsoft-enterprise
- Locate affected authorization controls and verify deployed versions.Telemetry: Application inventory · The source must identify the affected control. · Rule authorization-bypass
Exploitation evidence
- Review the advisory's documented behavior on matching hosts before selecting a hunt.Telemetry: DeviceProcessEvents · Product family alone does not justify a CVE-specific detection. · Rule microsoft-enterprise
Show more (2)
Exploitation evidence
- Review privileged operations performed by unexpected users on affected deployments.Telemetry: Application audit logs · Authorization anomalies can support a targeted hunt. · Rule authorization-bypass
Response
- Confirm the source-stated KB or mitigation on matching assets.Telemetry: DeviceTvmSoftwareVulnerabilities · A post-update inventory check verifies remediation. · Rule microsoft-enterprise
CISA KEV Record
CISA KEV status was not determined for this record.
Change History & Source Data
— No recorded material change
- CNA / source
- secure@microsoft.com
- Record status · verification
- UPDATED · Unknown
- CPE
- Unknown
Evidence & Provenance
Linked by the query's stored exact CVE association. Review required tables and validation status before use.
Detection Hunting Query
Target: DeviceTvmSoftwareVulnerabilities•Defender XDR
Detect endpoints exposed to CVE-2026-83792
Purpose: Exposure assessment (Category: Exposure Check)Why linked: Query metadata names CVE-2026-83792
DeviceTvmSoftwareVulnerabilities| where CveId == "CVE-2026-83792"| project DeviceId, DeviceName, OSPlatform, OSVersion, SoftwareVendor, SoftwareName, SoftwareVersion, CveId, VulnerabilitySeverityLevel, RecommendedSecurityUpdate, RecommendedSecurityUpdateId| sort by VulnerabilitySeverityLevel descSchema Checked · Not runtime validatedSource: SecOps Signal deterministic template · Limited verificationStatic screening: Passed structure and schema checks; tenant execution is not verified.
Correlated briefings
SecOps Signal surfaces public advisory facts only. A missing value means the source has not published it, not that your environment is unaffected. No tenant inventory is connected.