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CVE-2026-33828 Microsoft CVE debrief

CVE-2026-33828 is a trust boundary violation vulnerability in Windows Attestation. An authorized attacker can exploit this vulnerability to elevate privileges locally. The vulnerability has a CVSS score of 7.8 and a severity of HIGH.

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
2026-06-10
Advisory published
2026-06-09
Advisory updated
2026-06-10

Who should care

Administrators and users of Windows 10, Windows 11, and Windows Server systems should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability is caused by a trust boundary violation in Windows Attestation. This allows an authorized attacker to elevate privileges locally. The Common Vulnerability Scoring System (CVSS) score for this vulnerability is 7.8, indicating a HIGH severity.

Defensive priority

HIGH

Recommended defensive actions

  • Apply patches and updates from Microsoft as soon as possible.
  • Review and update access controls and privilege settings to minimize the attack surface.
  • Monitor system logs and network activity for suspicious behavior.

Evidence notes

The CVE-2026-33828 vulnerability was published on June 9, 2026, and modified on June 10, 2026. The vulnerability affects multiple versions of Windows 10, Windows 11, and Windows Server.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-33828 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-33828

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

  • CVE-2026-33828 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-33828

    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.