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PatchSiren cyber security CVE debrief

CVE-2026-42982 Microsoft CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-14T17:16:48.330Z and has not been modified since then. The NVD entry is currently Analyzed. This vulnerability, CVE-2026-42982, is caused by improper validation of consistency within input in Windows Secure Kernel Mode, allowing an authorized attacker to elevate privileges locally. It affects multiple versions of Windows 10, Windows 11, and Windows Server. System administrators and security teams should be aware of this vulnerability and take steps to mitigate it. The CVE record and NVD entry provide details on the vulnerability, including its CVSS score and affected systems.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
HIGH 7.8
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

System administrators and security teams responsible for Windows systems, particularly those using Windows 10, Windows 11, and Windows Server, should be aware of this vulnerability and take steps to mitigate it. They should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Technical summary

The vulnerability, CVE-2026-42982, is caused by improper validation of consistency within input in Windows Secure Kernel Mode. This allows an authorized attacker to elevate privileges locally. The vulnerability affects multiple versions of Windows 10, Windows 11, and Windows Server. It is recommended that system administrators and security teams take steps to mitigate this vulnerability.

Defensive priority

High priority should be given to patching this vulnerability, as it allows for local privilege escalation.

Recommended defensive actions

  • Apply patches or updates provided by Microsoft to vulnerable systems
  • Conduct a thorough inventory of Windows systems to identify those that may be vulnerable
  • Implement compensating controls, such as monitoring for suspicious activity
  • Consider isolating sensitive systems or data to limit potential impact
  • Review compensating controls for exposed systems while remediation is scheduled and verified

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its CVSS score and affected systems. Microsoft has provided a vendor advisory for this vulnerability. The vulnerability allows for local privilege escalation. Affected systems include multiple versions of Windows 10, Windows 11, and Windows Server. Defenders should verify the affected scope and vendor guidance.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-42982 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-42982

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

  • CVE-2026-42982 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-42982

    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.