CVE-2026-78454 - Vulnerability Details

- Windows CD-ROM Driver Information Disclosure Vulnerability

Description

Out-of-bounds read in Windows CD-ROM Driver allows an authorized attacker to disclose information locally.

Published: 2026-09-08

Score: 5.5 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Impact

The Windows CD‑ROM driver contains an out‑of‑bounds read that can be triggered by an authorized local user. The flaw permits reading memory beyond intended boundaries, which can reveal sensitive data. The weakness is identified as CWE‑125 and results in a local information disclosure vulnerability.

Affected Systems

Affected systems are Microsoft Windows operating systems, including Windows 10 versions 1607, 1809, 21H2, 22H2, as well as Windows 11 versions 23H2, 24H2, 25H2, and 26H1, and Windows Server 2016 and 2019 (including Server Core installs). All listed builds use the default CD‑ROM driver that contains the vulnerability.

Risk and Exploitability

The CVSS score of 5.5 indicates moderate severity. With no EPSS data, the exploitation likelihood is unknown, but the vulnerability is only usable by local users with sufficient privileges. It is not yet listed in the CISA KEV catalog. The potential impact is limited to information disclosure on the local machine. Immediate action is recommended for systems where exposure is a concern, but no public patch has been released yet.

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 1607

affected

Version	Status	Constraints
`10.0.14393.0`	affected	< 10.0.14393.9512

Microsoft

Windows 10 Version 1809

affected

Version	Status	Constraints
`10.0.17763.0`	affected	< 10.0.17763.9245

Microsoft

Windows 10 Version 21H2

affected

Version	Status	Constraints
`10.0.19044.0`	affected	< 10.0.19044.7725

Microsoft

Windows 10 Version 22H2

affected

Version	Status	Constraints
`10.0.19045.0`	affected	< 10.0.19045.7725

Microsoft

Windows 11 version 23H2

affected

Version	Status	Constraints
`10.0.22631.0`	affected	< 10.0.22631.7582

Microsoft

Windows 11 Version 23H2

affected

Version	Status	Constraints
`10.0.22631.0`	affected	< 10.0.22631.7582

Microsoft

Windows 11 Version 24H2

affected

Version	Status	Constraints
`10.0.26100.0`	affected	< 10.0.26100.9445

Microsoft

Windows 11 Version 25H2

affected

Version	Status	Constraints
`10.0.26200.0`	affected	< 10.0.26200.9445

Microsoft

Windows 11 version 26H1

affected

Version	Status	Constraints
`10.0.28000.0`	affected	< 10.0.28000.2954

Microsoft

Windows Server 2016

affected

Version	Status	Constraints
`10.0.14393.0`	affected	< 10.0.14393.9512

Microsoft

Windows Server 2016 (Server Core installation)

affected

Version	Status	Constraints
`10.0.14393.0`	affected	< 10.0.14393.9512

Microsoft

Windows Server 2019

affected

Version	Status	Constraints
`10.0.17763.0`	affected	< 10.0.17763.9245

Microsoft

Windows Server 2019 (Server Core installation)

affected

Version	Status	Constraints
`10.0.17763.0`	affected	< 10.0.17763.9245

Configuration 1 [-]

OR	cpe:2.3:o:microsoft:windows_10_1607:::::::x64:*
	cpe:2.3:o:microsoft:windows_10_1607:::::::x86:*
	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_server_2016::::::::
	cpe:2.3:o:microsoft:windows_server_2019::::::::

No data.

Vendor Product Confidence Versions

Microsoft

Windows 10 1607

86%

Version	Status	Scheme	Platform
`[10.0.14393.0,10.0.14393.9512)`	affected	generic	['32-bit_systems', 'x64-based_systems']

Microsoft

Windows 10 1809

86%

Version	Status	Scheme	Platform
`[10.0.17763.0,10.0.17763.9245)`	affected	generic	['32-bit_systems', 'x64-based_systems']

Microsoft

Windows 10 21h2

86%

Version	Status	Scheme	Platform
`[10.0.19044.0,10.0.19044.7725)`	affected	generic	['32-bit_systems', 'arm64-based_systems', 'x64-based_systems']

Microsoft

Windows 10 22h2

86%

Version	Status	Scheme	Platform
`[10.0.19045.0,10.0.19045.7725)`	affected	generic	['32-bit_systems', 'arm64-based_systems', 'x64-based_systems']

Microsoft

Windows 11 23h2

86%

Version	Status	Scheme	Platform
`[10.0.22631.0,10.0.22631.7582)`	affected	generic	['arm64-based_systems']

Microsoft

Windows 11 23h2

86%

Version	Status	Scheme	Platform
`[10.0.22631.0,10.0.22631.7582)`	affected	generic	['x64-based_systems']

Microsoft

Windows 11 24h2

86%

Version	Status	Scheme	Platform
`[10.0.26100.0,10.0.26100.9445)`	affected	generic	['arm64-based_systems', 'x64-based_systems']

Microsoft

Windows 11 25h2

86%

Version	Status	Scheme	Platform
`[10.0.26200.0,10.0.26200.9445)`	affected	generic	['arm64-based_systems', 'x64-based_systems']

Microsoft

Windows 11 26h1

86%

Version	Status	Scheme	Platform
`[10.0.28000.0,10.0.28000.2954)`	affected	generic	['arm64-based_systems', 'x64-based_systems']

Microsoft

Windows Server 2016

100%

Version	Status	Scheme	Platform
`[10.0.14393.0,10.0.14393.9512)`	affected	generic	['x64-based_systems']

Microsoft

Windows Server 2016 (server Core Installation)

100%

Version	Status	Scheme	Platform
`[10.0.14393.0,10.0.14393.9512)`	affected	generic	['x64-based_systems']

Microsoft

Windows Server 2019

100%

Version	Status	Scheme	Platform
`[10.0.17763.0,10.0.17763.9245)`	affected	generic	['x64-based_systems']

Microsoft

Windows Server 2019 (server Core Installation)

100%

Version	Status	Scheme	Platform
`[10.0.17763.0,10.0.17763.9245)`	affected	generic	['x64-based_systems']

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Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

Apply any available Windows security updates from Microsoft that address driver memory safety
Restrict local user access to CD‑ROM devices by adjusting device manager permissions or using group policy
Disable or uninstall unused CD‑ROM drivers to eliminate the vulnerable code from the system
Enable system audit logs to monitor for unauthorized driver access attempts
Consider replacing the CD‑ROM device with a network‑based media solution if local access is not required

Generated by OpenCVE AI on September 9, 2026 at 02:15 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 0.00404.

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78454

History

Fri, 11 Sep 2026 23:45:00 +0000

Type	Values Removed	Values Added
CPEs		cpe:2.3:o:microsoft:windows_10_1607:::::::x64:* 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:*

Thu, 10 Sep 2026 21:30:00 +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 Server 2016 (server Core Installation) 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 Server 2016 (server Core Installation) Microsoft windows Server 2019 (server Core Installation)

Tue, 08 Sep 2026 21:30:00 +0000

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

Tue, 08 Sep 2026 17:30:00 +0000

Type	Values Removed	Values Added
Description		Out-of-bounds read in Windows CD-ROM Driver allows an authorized attacker to disclose information locally.
Title		Windows CD-ROM Driver Information Disclosure Vulnerability
First Time appeared		Microsoft Microsoft windows 10 1607 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 Server 2016 Microsoft windows Server 2019
Weaknesses		CWE-125
CPEs		cpe:2.3:o:microsoft:windows_10_1607:::::::x86:* 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_2016:::::::: cpe:2.3:o:microsoft:windows_server_2019::::::::
Vendors & Products		Microsoft Microsoft windows 10 1607 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 Server 2016 Microsoft windows Server 2019
References		https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78454
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 1607 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 Server 2016 Windows Server 2016 (server Core Installation) Windows Server 2019 Windows Server 2019 (server Core Installation)

MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-09-08T17:18:27.720Z

Updated: 2026-09-25T21:38:13.467Z

Reserved: 2026-08-24T16:21:50.287Z

Link: CVE-2026-78454

Vulnrichment

Updated: 2026-09-08T20:03:00.824Z

NVD

Status : Analyzed

Published: 2026-09-08T18:20:43.973

Modified: 2026-09-11T18:55:06.920

Link: CVE-2026-78454

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-09-10T20:48:45Z

Weaknesses

CWE-125
Out-of-bounds Read

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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