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CVE-2026-41108 Microsoft CVE debrief

CVE-2026-41108 is a heap-based buffer overflow vulnerability in Microsoft Windows DNS that allows an authorized attacker to elevate privileges locally. The vulnerability has a CVSS score of 7 and a severity of HIGH. It was published on 2026-06-09T17:17:06.920Z and modified on 2026-06-11T17:03:34.950Z.

Vendor
Microsoft
Product
Windows 10 Version 1607
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 DNS are advised to take action to mitigate this vulnerability.

Technical summary

The vulnerability is caused by a heap-based buffer overflow in Microsoft Windows DNS. An authorized attacker can exploit this vulnerability to elevate privileges locally. The vulnerability affects multiple versions of Microsoft Windows, including Windows 10, Windows 11, and Windows Server.

Defensive priority

HIGH

Recommended defensive actions

  • Apply patches or updates provided by Microsoft to vulnerable systems.
  • Refer to [ref-4](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41108) for vendor advisory and mitigation guidance.

Evidence notes

The vulnerability is analyzed and has a CVSS vector of CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H. It is classified under CWE-122.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-41108 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-41108

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

  • CVE-2026-41108 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-41108

    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.