EUVD-2026-56318
GHSA-859w-54qg-vr67
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Network-reachable RPC service requires low-privilege authentication; purely availability impact with no confidentiality or integrity consequence.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Null pointer dereference in Microsoft Remote Registry Service allows an authorized attacker to deny service over a network.
AnalysisAI
Remote Registry Service denial of service in Microsoft Windows allows network-authenticated attackers to crash the service via a crafted RPC request triggering a null pointer dereference. The CVSS vector (AV:N/AC:L/PR:L/UI:N) confirms that any domain or local account with network access to the service is sufficient for exploitation - no elevated privileges required. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The Remote Registry Service (winreg) must be running on the target system - it is disabled by default on Windows 10 client editions and enabled by default on Windows Server editions. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 6.5 Medium is consistent with the actual risk profile. … 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 vendor-released patches from Microsoft's July 2026 Patch Tuesday cycle. … Detailed patch versions, workarounds, and compensating controls in full report. |
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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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