Exposure of Sensitive Information in Windows DirectX

Executive Summary

CVE-2026-49807 is an information disclosure vulnerability in Windows DirectX. It allows an unauthorized attacker to locally access and disclose sensitive information that they should not have access to.

The vulnerability is classified as an exposure of sensitive information to an unauthorized actor. This means the flaw could let an attacker read data they are not permitted to view, but it does not allow them to modify or delete data.

The CVSS v3.1 base score for this vulnerability is 6.2, with a vector of AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. This indicates the attack is local (AV:L), requires low complexity (AC:L), no privileges (PR:N), no user interaction (UI:N), and has a high impact on confidentiality (C:H) but no impact on integrity or availability.

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Detection Guidance

The provided context does not include specific detection methods or commands for identifying the vulnerability CVE-2026-49807 on a network or system. Detection may require checking for updates or patches related to Windows DirectX, monitoring for unusual local information disclosure, or using Microsoft-provided tools or guidance.

For further details, refer to the official Microsoft update guide, which may provide detection steps or tools.

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Impact Analysis

If you are using a system with Windows DirectX, this vulnerability could allow an attacker with local access to disclose sensitive information stored on your system.

• An attacker could gain access to confidential data, such as personal files, credentials, or other sensitive information.
• The vulnerability does not allow remote exploitation, so the attacker must have physical or local access to the affected system.

Since the CVSS score indicates a high impact on confidentiality, the risk of data exposure is significant if the vulnerability is exploited.

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Compliance Impact

This vulnerability could impact compliance with data protection regulations like GDPR or HIPAA if sensitive information is exposed.

• GDPR: If the disclosed information includes personal data of EU citizens, it could lead to a data breach notification requirement and potential fines for failing to protect personal data.
• HIPAA: If the exposed data includes protected health information (PHI), it could result in a breach under HIPAA, requiring notification and potential penalties for non-compliance.

Organizations must ensure they apply the necessary patches or mitigations to avoid violating these regulations due to unauthorized data disclosure.

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Mitigation Strategies

The provided context does not include specific mitigation steps for CVE-2026-49807. However, general steps to mitigate information disclosure vulnerabilities in Windows DirectX may include:

• Apply the latest security updates or patches provided by Microsoft for Windows DirectX.
• Restrict local access to sensitive systems to minimize the risk of unauthorized information disclosure.
• Monitor Microsoft's official resources for specific guidance on addressing this vulnerability.

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