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PatchSiren cyber security CVE debrief

CVE-2026-62895 Microsoft CVE debrief

Microsoft Azure Arc SQL Server Extension Elevation of Privilege Vulnerability allows unauthorized attackers to elevate privileges over a network due to a permissive cross-domain policy with untrusted domains. This vulnerability affects Azure Arc SQL Server Extension deployments, which defenders should assess for exposure and apply patches to prevent potential elevation of privileges. The CVE record and vendor advisory provide details on the vulnerability, but additional information on affected versions and remediation may require verification from official sources.

Vendor
Microsoft
Product
Azure Arc SQL Server Extension
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-08
Original CVE updated
2026-10-08
Advisory published
2026-09-08
Advisory updated
2026-10-08

Who should care

Defenders responsible for Azure Arc SQL Server Extension deployments should assess exposure and apply patches to prevent potential elevation of privileges.

Why it matters

CVE-2026-62895 Azure Arc SQL Server Extension Elevation of Privilege Vulnerability requires defenders to verify exposure, apply patches, and update policies to prevent potential elevation of privileges by unauthorized attackers.

  • Potential elevation of privileges by unauthorized attackers
  • Need to verify exposure of Azure Arc SQL Server Extension
  • Requirement to apply patches provided by Microsoft
  • Importance of reviewing and updating cross-domain policies

Technical summary

The Azure Arc SQL Server Extension Elevation of Privilege Vulnerability occurs due to a permissive cross-domain policy with untrusted domains, allowing unauthorized attackers to elevate privileges over a network. This vulnerability impacts Azure Arc SQL Server Extension deployments, requiring defenders to verify exposure and apply patches provided by Microsoft. Reviewing and updating cross-domain policies to restrict untrusted domains is also essential to prevent potential elevation of privileges.

Defensive priority

Defenders should prioritize verifying exposure of Azure Arc SQL Server Extension and applying vendor patches.

Recommended defensive actions

  • Verify exposure of Azure Arc SQL Server Extension in your environment
  • Apply patches provided by Microsoft
  • Review and update cross-domain policies to restrict untrusted domains

Evidence notes

The CVE record and vendor advisory provide details on the vulnerability. However, additional information on affected versions and remediation may require verification from official sources.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-62895 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-62895

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

  • CVE-2026-62895 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-62895

    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.