CVE-2026-58627 Microsoft CVE debrief

Who should care

Administrators and security teams responsible for Windows DHCP Server infrastructure should review and update configurations to mitigate potential impact. They should also monitor network traffic for suspicious activity and implement compensating controls to mitigate potential impact. Additionally, they should check relevant monitoring, detection, and logs for exposed assets that need extra review.

Technical summary

CVE-2026-58627 is a high-severity vulnerability in Windows DHCP Server that allows an unauthorized attacker to deny service over a network. The vulnerability has a CVSS score of 7.5 and is classified as CWE-400: Uncontrolled Resource Consumption. Affected product deployments should be reviewed for potential exposure, and defenders should plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.

Defensive priority

High priority due to potential for denial of service attacks.

Recommended defensive actions

• Apply patches provided by Microsoft
• Review and update Windows DHCP Server configurations
• Monitor network traffic for suspicious activity
• Implement compensating controls to mitigate potential impact
• Review compensating controls for exposed systems while remediation is scheduled and verified

Evidence notes

Evidence is based on official CVE and NVD records, as well as vendor advisories from Microsoft. The CVE record was published on 2026-07-14T18:18:44.790Z and has not been modified since then. However, defenders should verify the affected scope and severity with their specific environment and review vendor guidance for mitigation steps. Additionally, they should check relevant monitoring, detection, and logs for exposed assets that need extra review.

Official resources