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CVE-2026-102192 Microsoft CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-10-13T19:01:33.022Z and has not been modified since then. This vulnerability affects Windows Failover Cluster, allowing an unauthorized attacker to deny service over a network due to an integer underflow (wrap or wraparound). Defenders should assess exposure and prioritize patching or mitigation to prevent potential service disruption in Windows Server environments using Failover Cluster.

Vendor
Microsoft
Product
Windows Server 2019
CVSS
HIGH 7.5
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 Server environments, especially those using Failover Cluster, should assess exposure and prioritize patching or mitigation. This includes verifying the vulnerability's impact on their specific configurations and taking steps to prevent potential service disruption. Security teams and vulnerability management teams should also review the vulnerability's details to ensure proper mitig

Why it matters

CVE-2026-102192 is a Denial of Service vulnerability in Windows Failover Cluster. Defenders should prioritize verifying exposure and applying patches or mitigations to prevent potential service disruption.

  • Potential denial of service in Windows Server environments using Failover Cluster
  • Need to verify exposure and apply patches or mitigations

Technical summary

Integer underflow (wrap or wraparound) in Windows Failover Cluster allows an unauthorized attacker to deny service over a network. This vulnerability impacts Windows Server environments using Failover Cluster, emphasizing the need for defenders to verify exposure and apply patches or mitigations to prevent service disruption. The vulnerability's technical details indicate a high severity level, with a CVSS score of 7.5.

Defensive priority

Defenders should prioritize verifying exposure of Windows Server installations, especially those using Failover Cluster, and apply patches or mitigations as available.

Recommended defensive actions

  • Verify exposure of Windows Server installations using Failover Cluster
  • Apply patches or mitigations as available
  • Monitor for unusual activity in Windows Server environments

Evidence notes

The CVE record and source item provide details on the vulnerability in Windows Failover Cluster, but specific details on exploitation or impact are limited.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-102192 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-102192

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

  • CVE-2026-102192 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-102192

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

Supplemental references

  • Windows Failover Cluster Denial of Service Vulnerability

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/102xxx/CVE-2026-102192.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-102192

    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.