EUVD-2026-56312
GHSA-rvx7-2hqp-xq69
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N and PR:N confirmed by unauthenticated network exploitation via TCP/IP; A:H reflects full kernel crash; C:N and I:N as only availability is impacted with no scope change.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service over a network.
AnalysisAI
Null pointer dereference in the Windows TCP/IP kernel driver exposes virtually every supported Windows Server and desktop release to remote denial-of-service attacks without any authentication or user interaction. The flaw, rooted in CWE-476, causes a kernel panic (Blue Screen of Death) when a specially crafted network packet triggers a NULL pointer dereference in tcpip.sys, crashing the affected host. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special configuration is required. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 7.5 (High) is well-calibrated: network exploitability (AV:N), no complexity barrier (AC:L), no authentication (PR:N), and no user interaction (UI:N) combine to make this trivially automatable at scale, while availability impact is rated High (A:H) due to the kernel crash outcome. … 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 | The primary remediation is to apply the vendor-released patches via Windows Update or the Microsoft Update Catalog; the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-59132 provides the full per-product patch matrix. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows Server (2012-2025) and Windows 11 25H2 systems across the organization and classify by criticality tier. …
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Same weakness CWE-476 – NULL Pointer Dereference
View allSame technique Null Pointer Dereference
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External POC / Exploit Code
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