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CVE-2026-49807 Microsoft CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-14T17:16:57.297Z and has not been modified since then. The NVD entry is currently Analyzed. This MEDIUM-severity vulnerability (CVSS Score: 6.2) in Windows DirectX allows an unauthorized attacker to disclose information locally. The vulnerability's CVSS vector is CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. Affected products include multiple versions of Windows 10, Windows 11, and Windows Server. Security teams and administrators responsible for Windows systems, particularly those using DirectX, should be aware of this vulnerability. To address this vulnerability, apply patches or mitigations as recommended by Microsoft. Review and update inventory of Windows systems using DirectX and implement compensating controls such as monitoring for suspicious local activity. Ensure proper configuration and hardening of Windows systems and verify system patch levels and perform vulnerability scans.

Vendor
Microsoft
Product
Windows 10 Version 1809
CVSS
MEDIUM 6.2
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-14
Original CVE updated
2026-07-22
Advisory published
2026-07-14
Advisory updated
2026-07-22

Who should care

Security teams and administrators responsible for Windows systems, particularly those using DirectX, should be aware of this vulnerability. This CVE affects various Windows versions and could allow unauthorized local information disclosure.

Technical summary

CVE-2026-49807 is a MEDIUM-severity vulnerability (CVSS Score: 6.2) in Windows DirectX that allows an unauthorized attacker to disclose information locally. The vulnerability's CVSS vector is CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. Affected products include multiple versions of Windows 10, Windows 11, and Windows Server.

Defensive priority

Apply patches or mitigations as recommended by Microsoft to address the information disclosure vulnerability in Windows DirectX.

Recommended defensive actions

  • Apply the vendor-recommended patches for CVE-2026-49807.
  • Review and update inventory of Windows systems using DirectX.
  • Implement compensating controls such as monitoring for suspicious local activity.
  • Ensure proper configuration and hardening of Windows systems.
  • Verify system patch levels and perform vulnerability scans.

Evidence notes

The CVE record and NVD details indicate a MEDIUM-severity vulnerability in Windows DirectX with a CVSS score of 6.2. Multiple Windows versions are affected, including Windows 10, Windows 11, and Windows Server. Microsoft has provided a vendor advisory for this vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-49807 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-49807

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-49807 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-49807

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.