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PatchSiren cyber security CVE debrief

CVE-2026-97835 Microsoft CVE debrief

A vulnerability in the DNS Server allows an authorized attacker to disclose information over a network due to an out-of-bounds read issue. This issue affects Windows DNS servers, potentially leading to information disclosure. Defenders should assess exposure and prioritize patching for affected versions. The vulnerability is medium-severity and requires immediate attention from defenders responsible for Windows DNS servers, IT administrators, and security teams. The CVE record and source item provide details on the vulnerability, affected products, and references to vendor advisories.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-13
Original CVE updated
2026-10-14
Advisory published
2026-10-13
Advisory updated
2026-10-14

Who should care

Defenders responsible for Windows DNS servers, IT administrators, and security teams should assess exposure and prioritize patching for affected versions.

Why it matters

CVE-2026-97835 is a medium-severity vulnerability in Windows DNS Server that allows authorized attackers to disclose information. Defenders should prioritize patching affected versions and monitor for potential exposure.

  • Potential disclosure of sensitive information
  • Verification of patch application for affected systems
  • Monitoring for unauthorized access to DNS server data

Technical summary

The vulnerability is caused by an out-of-bounds read in the DNS Server, allowing an authorized attacker to disclose information over a network. This issue affects Windows DNS servers and requires immediate attention from defenders. The vulnerability is medium-severity and has significant implications for defenders responsible for Windows DNS servers, IT administrators, and security teams. Technical details indicate that the vulnerability can be exploited by authorized attackers, leading to potential information disclosure.

Defensive priority

Defenders should prioritize verifying and applying patches for affected Windows versions, especially for DNS servers and related infrastructure.

Recommended defensive actions

  • Verify and apply patches for affected Windows versions
  • Review DNS server configurations and related infrastructure for potential exposure
  • Monitor for unauthorized access to sensitive information

Evidence notes

The CVE record and source item provide details on the vulnerability, affected products, and references to vendor advisories. The vulnerability is caused by an out-of-bounds read in the DNS Server, allowing an authorized attacker to disclose information over a network. The source item for CVE-2026-97835 and the official CVE Program record offer insights into the vulnerability and its potential impact. Evidence from these sources indicates that defenders should prioritize verifying and

Sources and references

Verified primary and authoritative sources

  • CVE-2026-97835 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-97835

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

  • CVE-2026-97835 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-97835

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Role: DNS Server Information Disclosure Vulnerability

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/97xxx/CVE-2026-97835.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97835

    Supplemental source - vendor-advisory, patch

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.