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CVE-2026-42986 Microsoft CVE debrief

CVE-2026-42986 is a HIGH severity vulnerability in Microsoft Graphics Component. An authorized attacker can exploit this vulnerability locally to elevate their privileges. The vulnerability has a CVSS score of 7.8 and was published on 2026-06-09T17:17:14.683Z. The vulnerability affects multiple versions of Windows 10, Windows 11, and Windows Server.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-11
Advisory published
2026-06-09
Advisory updated
2026-06-11

Who should care

Administrators and users of affected Microsoft Windows systems should prioritize patching this vulnerability to prevent potential elevation of privileges by authorized attackers.

Technical summary

The vulnerability is a use-after-free issue in the Microsoft Graphics Component. This type of vulnerability occurs when a program uses memory after it has been freed, which can lead to unexpected behavior, crashes, or, in this case, potential elevation of privileges.

Defensive priority

High

Recommended defensive actions

  • Apply patches from Microsoft as soon as possible.
  • Ensure that all Windows systems are up-to-date with the latest security patches.
  • Consider implementing additional security measures such as multi-factor authentication and monitoring for suspicious activity.

Evidence notes

The CVE record and details are sourced from official databases and vendor advisories.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-42986 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-42986

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

  • CVE-2026-42986 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-42986

    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.