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CVE-2026-55014 Microsoft CVE debrief

CVE-2026-55014 is a HIGH severity vulnerability with a CVSS score of 7.8, involving improper access control in Windows Remote Help Defense, allowing an authorized attacker to elevate privileges locally. The vulnerability's CVSS vector is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Defenders should prioritize verifying and enhancing access controls for Windows Remote Help Defense to mitigate local privilege escalation risks. This vulnerability affects Windows systems with Remote Help Defense enabled, potentially impacting various Windows versions and configurations. The CVE record was published on 2026-07-14T17:17:09.217Z and has not been modified since then.

Vendor
Microsoft
Product
Windows Remote Help
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-14
Original CVE updated
2026-07-23
Advisory published
2026-07-14
Advisory updated
2026-07-23

Who should care

Defenders should verify Windows Remote Help Defense configurations and ensure proper access controls are in place to prevent local privilege escalation. This includes reviewing and enhancing access control policies, implementing additional monitoring, and checking relevant logs for exposed assets. Security teams and vulnerability management teams should prioritize this vulnerability for remediation.

Technical summary

CVE-2026-55014 is a HIGH severity vulnerability with a CVSS score of 7.8. It involves improper access control in Windows Remote Help Defense, allowing an authorized attacker to elevate privileges locally. The vulnerability's CVSS vector is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. This vulnerability affects Windows systems with Remote Help Defense enabled, potentially impacting various Windows versions and configurations.

Defensive priority

Defenders should prioritize verifying and enhancing access controls for Windows Remote Help Defense to mitigate local privilege escalation risks. This includes reviewing and enhancing access control policies, implementing additional monitoring, and checking relevant logs for exposed assets.

Recommended defensive actions

  • Verify Windows Remote Help Defense configurations to ensure proper access controls.
  • Implement additional monitoring for local privilege escalation attempts.
  • Review and enhance access control policies for Windows Remote Help Defense.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record and NVD entry provide initial details. Further analysis is needed to fully understand the vulnerability's impact and affected scope. Defenders should verify Windows Remote Help Defense configurations and ensure proper access controls are in place to prevent local privilege escalation. Evidence limits suggest additional review is required to confirm affected systems and validate vendor guidance.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-55014 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-55014

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

  • CVE-2026-55014 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-55014

    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.