PatchSiren cyber security CVE debrief

CVE-2026-97837 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 multiple Windows 10, Windows 11, and Windows Server releases. DNS Server administrators and security teams should assess exposure and apply patches. The vulnerability has a medium severity and requires attention from administrators and security teams to assess exposure and apply patches. CVE-2026-97837 is an out-of-bounds read vulnerability in the DNS Server that allows an authorized attacker to disclose information over a network.

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

DNS Server administrators, security teams, and IT professionals responsible for Windows Server deployments should assess exposure and apply patches.

Why it matters

CVE-2026-97837 is a medium-severity vulnerability in DNS Server that requires attention from administrators and security teams to assess exposure and apply patches.

Potential information disclosure over the network
Requires verification of affected versions and exposure
Patch application is recommended for DNS Server administrators
Monitoring of DNS Server logs for potential disclosure attempts is advised

Technical summary

CVE-2026-97837 is an out-of-bounds read vulnerability in the DNS Server that allows an authorized attacker to disclose information over a network. Affected versions include multiple Windows 10, Windows 11, and Windows Server releases. The vulnerability has a medium severity and requires attention from administrators and security teams to assess exposure and apply patches.

Defensive priority

Medium priority for DNS Server administrators and security teams to assess exposure and apply patches.

Recommended defensive actions

Assess exposure of DNS Server installations to CVE-2026-97837
Apply patches from Microsoft for affected Windows versions
Verify inventory of DNS Servers for affected versions
Monitor DNS Server logs for potential information disclosure attempts

Evidence notes

The CVE Program and NVD provide official records of the vulnerability. Microsoft has released a patch for the issue. The vulnerability affects multiple Windows 10, Windows 11, and Windows Server releases. The CVE record was published on 2026-10-13T19:01:40.880Z and has not been modified since then. The official CVE Program record and NVD vulnerability detail provide additional information on the vulnerability.

Sources and references

Verified primary and authoritative sources

CVE-2026-97837 CVE Program record
Publisher, destination, and source semantics verified

URL: https://www.cve.org/CVERecord?id=CVE-2026-97837

CVE Program - Official CVE Program record with source-provided CVE metadata.
CVE-2026-97837 NVD vulnerability detail
Publisher, destination, and source semantics verified

URL: https://nvd.nist.gov/vuln/detail/CVE-2026-97837

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-2026-97837.json

cve_program_cvelist_v5
Source reference
Unverified legacy reference

URL: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97837

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.