CVE-2026-85938 - Vulnerability Details

- Windows Broadcast DVR User Service Information Disclosure Vulnerability

Description

Improper access control in Windows Broadcast DVR User Service allows an authorized attacker to disclose information locally.

Published: 2026-10-13

Score: 5.5 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Impact

This vulnerability arises from improper access control in the Windows Broadcast DVR User Service. An attacker with local privileges can use the service to read data that should be protected, enabling a local confidentiality breach. The flaw corresponds to CWE‑862. The impact is therefore a local information disclosure limited to the user who can interact with the service.

Affected Systems

Microsoft Windows 10 releases 1809, 21H2, and 22H2; Windows 11 releases 23H2, 24H2, 25H2, 26H2, 26H1; and Windows Server 2019, both full and Server‑Core installations are affected.

Risk and Exploitability

The CVSS score of 5.5 points to moderate risk. Because the exploit needs only local authorization, any user who can access the service may disclose sensitive data. EPSS data is not available and the vulnerability is not listed in CISA’s KEV catalog, indicating no known wide‑scale exploitation yet. However, the local disclosure vector remains a concern and should be addressed promptly.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Microsoft

Windows 10 Version 1809

affected

Version	Status	Constraints
`10.0.17763.0`	affected	< 10.0.17763.9376

Microsoft

Windows 10 Version 21H2

affected

Version	Status	Constraints
`10.0.19044.0`	affected	< 10.0.19044.7807

Microsoft

Windows 10 Version 22H2

affected

Version	Status	Constraints
`10.0.19045.0`	affected	< 10.0.19045.7807

Microsoft

Windows 11 version 23H2

affected

Version	Status	Constraints
`10.0.22631.0`	affected	< 10.0.22631.7652

Microsoft

Windows 11 Version 23H2

affected

Version	Status	Constraints
`10.0.22631.0`	affected	< 10.0.22631.7652

Microsoft

Windows 11 Version 24H2

affected

Version	Status	Constraints
`10.0.26100.0`	affected	< 10.0.26100.9711

Microsoft

Windows 11 Version 25H2

affected

Version	Status	Constraints
`10.0.26200.0`	affected	< 10.0.26200.9711

Microsoft

Windows 11 version 26H1

affected

Version	Status	Constraints
`10.0.28000.0`	affected	< 10.0.28000.3231

Microsoft

Windows 11 Version 26H2

affected

Version	Status	Constraints
`10.0.26300.0`	affected	< 10.0.26300.9711

Microsoft

Windows Server 2019

affected

Version	Status	Constraints
`10.0.17763.0`	affected	< 10.0.17763.9376

Microsoft

Windows Server 2019 (Server Core installation)

affected

Version	Status	Constraints
`10.0.17763.0`	affected	< 10.0.17763.9376

Configuration 1 [-]

OR	cpe:2.3:o:microsoft:windows_10_1809:::::::x64:*
	cpe:2.3:o:microsoft:windows_10_1809:::::::x86:*
	cpe:2.3:o:microsoft:windows_10_21h2:::::::arm64:*
	cpe:2.3:o:microsoft:windows_10_21h2:::::::x64:*
	cpe:2.3:o:microsoft:windows_10_21h2:::::::x86:*
	cpe:2.3:o:microsoft:windows_10_22h2:::::::arm64:*
	cpe:2.3:o:microsoft:windows_10_22h2:::::::x64:*
	cpe:2.3:o:microsoft:windows_10_22h2:::::::x86:*
	cpe:2.3:o:microsoft:windows_11_23h2:::::::arm64:*
	cpe:2.3:o:microsoft:windows_11_23h2:::::::x64:*
	cpe:2.3:o:microsoft:windows_11_24h2:::::::arm64:*
	cpe:2.3:o:microsoft:windows_11_24h2:::::::x64:*
	cpe:2.3:o:microsoft:windows_11_25h2:::::::arm64:*
	cpe:2.3:o:microsoft:windows_11_25h2:::::::x64:*
	cpe:2.3:o:microsoft:windows_11_26h1:::::::arm64:*
	cpe:2.3:o:microsoft:windows_11_26h1:::::::x64:*
	cpe:2.3:o:microsoft:windows_11_26h2:::::::arm64:*
	cpe:2.3:o:microsoft:windows_11_26h2:::::::x64:*
	cpe:2.3:o:microsoft:windows_server_2019:::::::x64:*

No data.

Vendor Product Confidence Versions

Microsoft

Windows 10 1809

100%

Version	Status	Scheme	Platform
`[10.0.17763.0,10.0.17763.9376)`	affected	generic	['32-bit_systems', 'x64-based_systems']

Microsoft

Windows 10 21h2

100%

Version	Status	Scheme	Platform
`[10.0.19044.0,10.0.19044.7807)`	affected	generic	['32-bit_systems', 'arm64-based_systems', 'x64-based_systems']

Microsoft

Windows 10 22h2

100%

Version	Status	Scheme	Platform
`[10.0.19045.0,10.0.19045.7807)`	affected	generic	['32-bit_systems', 'arm64-based_systems', 'x64-based_systems']

Microsoft

Windows 11 23h2

100%

Version	Status	Scheme	Platform
`[10.0.22631.0,10.0.22631.7652)`	affected	generic	['arm64-based_systems']

Microsoft

Windows 11 23h2

100%

Version	Status	Scheme	Platform
`[10.0.22631.0,10.0.22631.7652)`	affected	generic	['x64-based_systems']

Microsoft

Windows 11 24h2

100%

Version	Status	Scheme	Platform
`[10.0.26100.0,10.0.26100.9711)`	affected	generic	['arm64-based_systems', 'x64-based_systems']

Microsoft

Windows 11 25h2

100%

Version	Status	Scheme	Platform
`[10.0.26200.0,10.0.26200.9711)`	affected	generic	['arm64-based_systems', 'x64-based_systems']

Microsoft

Windows 11 26h1

100%

Version	Status	Scheme	Platform
`[10.0.28000.0,10.0.28000.3231)`	affected	generic	['arm64-based_systems', 'x64-based_systems']

Microsoft

Windows 11 26h2

100%

Version	Status	Scheme	Platform
`[10.0.26300.0,10.0.26300.9711)`	affected	generic	['arm64-based_systems', 'x64-based_systems']

Microsoft

Windows Server 2019

100%

Version	Status	Scheme	Platform
`[10.0.17763.0,10.0.17763.9376)`	affected	generic	['x64-based_systems']

Microsoft

Windows Server 2019 (server Core Installation)

100%

Version	Status	Scheme	Platform
`[10.0.17763.0,10.0.17763.9376)`	affected	generic	['x64-based_systems']

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Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Apply the latest Windows security update that contains the fix for CVE‑2026‑85938.
If the update cannot be applied immediately, disable or uninstall the Windows Broadcast DVR User Service to remove the local disclosure vector.
Enforce least‑privilege policies so that only trusted users have the permissions required to run the service, reducing the chance of local data exposure.

Generated by OpenCVE AI on October 14, 2026 at 09:02 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00335.

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85938

History

Wed, 28 Oct 2026 20:45:00 +0000

Type	Values Removed	Values Added
CPEs		cpe:2.3:o:microsoft:windows_10_1809:::::::x64:* cpe:2.3:o:microsoft:windows_10_21h2:::::::arm64:* cpe:2.3:o:microsoft:windows_10_21h2:::::::x64:* cpe:2.3:o:microsoft:windows_10_21h2:::::::x86:* cpe:2.3:o:microsoft:windows_10_22h2:::::::arm64:* cpe:2.3:o:microsoft:windows_10_22h2:::::::x64:* cpe:2.3:o:microsoft:windows_10_22h2:::::::x86:* cpe:2.3:o:microsoft:windows_11_23h2:::::::arm64:* cpe:2.3:o:microsoft:windows_11_23h2:::::::x64:* cpe:2.3:o:microsoft:windows_11_24h2:::::::arm64:* cpe:2.3:o:microsoft:windows_11_24h2:::::::x64:* cpe:2.3:o:microsoft:windows_11_25h2:::::::arm64:* cpe:2.3:o:microsoft:windows_11_25h2:::::::x64:* cpe:2.3:o:microsoft:windows_11_26h1:::::::arm64:* cpe:2.3:o:microsoft:windows_11_26h1:::::::x64:* cpe:2.3:o:microsoft:windows_11_26h2:::::::arm64:* cpe:2.3:o:microsoft:windows_11_26h2:::::::x64:* cpe:2.3:o:microsoft:windows_server_2019:::::::x64:*

Sun, 25 Oct 2026 03:30:00 +0000

Type	Values Removed	Values Added
First Time appeared		Microsoft windows 10 21h2 Microsoft windows 10 22h2 Microsoft windows 11 23h2 Microsoft windows 11 24h2 Microsoft windows 11 25h2 Microsoft windows 11 26h1 Microsoft windows 11 26h2 Microsoft windows Server 2019 (server Core Installation)
Vendors & Products		Microsoft windows 10 21h2 Microsoft windows 10 22h2 Microsoft windows 11 23h2 Microsoft windows 11 24h2 Microsoft windows 11 25h2 Microsoft windows 11 26h1 Microsoft windows 11 26h2 Microsoft windows Server 2019 (server Core Installation)

Wed, 14 Oct 2026 00:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 13 Oct 2026 19:15:00 +0000

Type	Values Removed	Values Added
Description		Improper access control in Windows Broadcast DVR User Service allows an authorized attacker to disclose information locally.
Title		Windows Broadcast DVR User Service Information Disclosure Vulnerability
First Time appeared		Microsoft Microsoft windows 10 1809 Microsoft windows 10 21h2 Microsoft windows 10 22h2 Microsoft windows 11 23h2 Microsoft windows 11 24h2 Microsoft windows 11 25h2 Microsoft windows 11 26h1 Microsoft windows 11 Version 26h2 For Arm64-based Systems Microsoft windows Server 2019
Weaknesses		CWE-862
CPEs		cpe:2.3:a:microsoft:windows_11_version_26h2_for_arm64-based_systems:::::::: cpe:2.3:o:microsoft:windows_10_1809:::::::x86:* cpe:2.3:o:microsoft:windows_10_21H2:::::::x86:* cpe:2.3:o:microsoft:windows_10_22H2:::::::x64:* cpe:2.3:o:microsoft:windows_11_23H2:::::::arm64:* cpe:2.3:o:microsoft:windows_11_23H2:::::::x64:* cpe:2.3:o:microsoft:windows_11_24H2:::::::arm64:* cpe:2.3:o:microsoft:windows_11_25H2:::::::arm64:* cpe:2.3:o:microsoft:windows_11_26H1:::::::x64:* cpe:2.3:o:microsoft:windows_server_2019::::::::
Vendors & Products		Microsoft Microsoft windows 10 1809 Microsoft windows 10 21h2 Microsoft windows 10 22h2 Microsoft windows 11 23h2 Microsoft windows 11 24h2 Microsoft windows 11 25h2 Microsoft windows 11 26h1 Microsoft windows 11 Version 26h2 For Arm64-based Systems Microsoft windows Server 2019
References		https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85938
Metrics		cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C'}`

Subscriptions

Microsoft Windows 10 1809 Windows 10 21h2 Windows 10 21h2 Windows 10 22h2 Windows 10 22h2 Windows 11 23h2 Windows 11 23h2 Windows 11 24h2 Windows 11 24h2 Windows 11 25h2 Windows 11 25h2 Windows 11 26h1 Windows 11 26h1 Windows 11 26h2 Windows 11 Version 26h2 For Arm64-based Systems Windows Server 2019 Windows Server 2019 (server Core Installation)

MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-10-13T19:00:15.588Z

Updated: 2026-10-31T18:05:41.855Z

Reserved: 2026-09-04T18:24:41.252Z

Link: CVE-2026-85938

Vulnrichment

Updated: 2026-10-13T20:02:13.791Z

NVD

Status : Analyzed

Published: 2026-10-13T19:21:20.537

Modified: 2026-10-28T20:29:55.903

Link: CVE-2026-85938

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-10-25T02:00:07Z

Weaknesses

CWE-862
Missing Authorization

Impact

Affected Systems

Risk and Exploitability

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

Exploitation none

Automatable no

Technical Impact partial

Subscriptions

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