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PatchSiren cyber security CVE debrief

CVE-2026-68849 Microsoft CVE debrief

An out-of-bounds read vulnerability in the Windows Bluetooth Port Driver allows an authorized attacker to disclose information locally. The CVE record was published on 2026-09-08T18:18:33.607Z and has not been modified since then. The NVD entry is currently Analyzed. This vulnerability affects Windows systems, particularly those with Bluetooth functionality enabled. Windows systems administrators and security teams should assess exposure to CVE-2026-68849 and apply patches provided by Microsoft for affected Windows versions. The vulnerability has a CVSS score of 4.7 and is rated as MEDIUM severity. It is essential for administrators to verify patch deployment for Windows systems,

Vendor
Microsoft
Product
Windows 10 Version 21H2
CVSS
MEDIUM 4.7
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-08
Original CVE updated
2026-09-16
Advisory published
2026-09-08
Advisory updated
2026-09-16

Who should care

Windows systems administrators and security teams should assess exposure to CVE-2026-68849 and apply patches provided by Microsoft for affected Windows versions

Why it matters

CVE-2026-68849 is a medium-severity vulnerability in the Windows Bluetooth Port Driver that allows local information disclosure. Windows systems administrators and security teams should assess exposure and apply patches provided by Microsoft for affected Windows versions.

  • Verify patch deployment for Windows systems
  • Assess exposure of Windows systems to local information disclosure
  • Monitor Windows systems for potential security incidents related to CVE-2026-68849

Technical summary

The vulnerability is an out-of-bounds read in the Windows Bluetooth Port Driver, which allows an authorized attacker to disclose information locally. The CVSS score for this vulnerability is 4.7, and its severity is rated as MEDIUM. This vulnerability impacts Windows systems with Bluetooth functionality. Microsoft has provided a patch and vendor advisory for the vulnerability. The CVE record and NVD detail page provide information on the vulnerability, including its CVSS score and severity.

Defensive priority

Medium priority for Windows systems administrators and security teams to assess exposure and apply patches

Recommended defensive actions

  • Assess exposure of Windows systems to CVE-2026-68849
  • Apply patches provided by Microsoft for affected Windows versions
  • Verify that Windows systems are running with the latest security updates

Evidence notes

The CVE record and NVD detail page provide information on the vulnerability, including its CVSS score and severity. Microsoft has provided a patch and vendor advisory for the vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-68849 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-68849

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

  • CVE-2026-68849 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-68849

    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.