EUVD-2026-56317
GHSA-2wcp-8j7j-g6vq
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Network-reachable service requires low-privilege authentication; impact is strictly limited to service availability with no confidentiality or integrity effects.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
3DescriptionCVE.org
Null pointer dereference in Microsoft Remote Registry Service allows an authorized attacker to deny service over a network.
AnalysisAI
Null pointer dereference in the Windows Remote Registry Service enables an authenticated network attacker to crash the service, resulting in denial of availability for remote registry operations across a broad range of Microsoft platforms. Affected builds span Windows 10/11 consumer releases and Windows Server 2012 through Server 2025, representing the near-entirety of Microsoft's currently supported Windows footprint. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to hold valid, low-privilege credentials on the target system or domain, as indicated by PR:L in the CVSS vector; unauthenticated exploitation is not supported by the available data. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 6.5 (Medium) accurately reflects the impact ceiling of a DoS-only vulnerability with no confidentiality or integrity components. … 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 Microsoft's cumulative security update, which advances each affected build to its respective fixed version as documented in ENISA EUVD-2026-56317 and the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-59138; updates are distributed through Windows Update, WSUS, and the Microsoft Update Catalog. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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