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PatchSiren cyber security CVE debrief

CVE-2026-57092 Microsoft CVE debrief

A critical vulnerability, CVE-2026-57092, exists in Windows VMSwitch, allowing an authorized attacker to elevate privileges over a network due to a use-after-free issue. This vulnerability has a CVSS score of 9.9, indicating critical severity. The vulnerability affects Windows systems with network-accessible VMSwitch configurations. System administrators and security teams should prioritize patching to mitigate potential risks.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
CRITICAL 9.9
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, especially those with network-accessible VMSwitch configurations, should prioritize patching. Additionally, operators and platform managers for affected systems should be aware of the potential risks and take necessary precautions.

Technical summary

CVE-2026-57092 is a use-after-free vulnerability in Windows VMSwitch. An authorized attacker can exploit this over a network to elevate privileges. The CVSS score is 9.9, indicating critical severity. This vulnerability is particularly concerning for systems with network-accessible VMSwitch configurations. Immediate patching is recommended to prevent potential exploitation.

Defensive priority

Immediate patching is recommended due to the critical severity and potential for privilege escalation. System administrators should prioritize patching to mitigate potential risks.

Recommended defensive actions

  • Apply the vendor-provided patch as soon as possible.
  • Conduct an inventory check to identify affected systems.
  • Implement compensating controls such as network segmentation.
  • Monitor for suspicious activity related to VMSwitch.
  • Review relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record was published on 2026-07-14T18:18:33.810Z and last modified on 2026-07-16T05:16:25.670Z. The NVD entry is currently Awaiting Analysis. This information is based on the CVE record and NVD entry. Further verification is recommended to confirm affected systems and assess potential impact.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-57092 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-57092

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

  • CVE-2026-57092 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-57092

    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.