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CVE-2026-45597 Microsoft CVE debrief

CVE-2026-45597 is a HIGH severity vulnerability in UI Automation Manager (uiamanager.dll) that allows an authorized attacker to elevate privileges locally due to a race condition. The vulnerability has a CVSS score of 7 and was published on 2026-06-09T17:17:27.897Z. The vulnerability affects various versions of Microsoft Windows 11 and Windows Server.

Vendor
Microsoft
Product
Windows 11 version 23H2
CVSS
HIGH 7
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 Microsoft Windows 11 and Windows Server systems should be aware of this vulnerability and take necessary precautions to mitigate the risk.

Technical summary

The vulnerability is caused by a race condition in UI Automation Manager (uiamanager.dll) that allows an authorized attacker to elevate privileges locally. The vulnerability has been assigned a CVSS score of 7 and is classified as CWE-362.

Defensive priority

HIGH

Recommended defensive actions

  • Apply the patch from Microsoft as soon as possible.
  • Review and update Windows systems to ensure they are running with the latest security updates.

Evidence notes

The vulnerability is documented in the CVE record [cve-org] and the NVD detail page [nvd]. Microsoft has also provided a vendor advisory [ref-4] for this vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-45597 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-45597

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

  • CVE-2026-45597 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-45597

    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.