EUVD-2026-73036
GHSA-3cxv-6w3j-w4rq
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
DNS is a network service requiring no authentication; integer overflow triggers remote DoS with no confidentiality or integrity impact.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Integer overflow or wraparound in Windows DNS allows an unauthorized attacker to deny service over a network.
AnalysisAI
Windows DNS Server across multiple Windows Server versions (2012 through 2025) contains a network-exploitable integer overflow (CWE-190) that unauthenticated remote attackers can trigger to crash or hang the DNS service, causing a denial of service. The CVSS vector (AV:N/AC:L/PR:N/UI:N) confirms no authentication or user interaction is required, making any exposed DNS server a direct target. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special configuration is required beyond the Windows DNS Server role being active on an affected Windows Server build - a default condition for all Active Directory domain controller deployments. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.5 (High) rating with AV:N/AC:L/PR:N/UI:N reflects a straightforward, unauthenticated network denial-of-service with no exploitation complexity barrier. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the Microsoft-released security updates immediately. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct a comprehensive audit of all Windows DNS Server instances across versions 2012 through 2025 in your environment and document current patch levels. …
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Same weakness CWE-190 – Integer Overflow or Wraparound
View allSame technique Buffer Overflow
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External POC / Exploit Code
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