{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-32216", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "state": "PUBLISHED", "assignerShortName": "microsoft", "dateReserved": "2026-03-11T01:49:58.660Z", "datePublished": "2026-04-14T16:57:38.302Z", "dateUpdated": "2026-04-16T14:18:30.906Z"}, "containers": {"cna": {"title": "Windows Redirected Drive Buffering System Denial of Service Vulnerability", "datePublic": "2026-04-14T14:00:00.000Z", "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:arm64:*", "versionStartIncluding": "10.0.28000.0", "versionEndExcluding": "10.0.28000.1836"}]}]}], "affected": [{"vendor": "Microsoft", "product": "Windows 11 version 26H1", "platforms": ["ARM64-based Systems", "x64-based Systems"], "versions": [{"version": "10.0.28000.0", "lessThan": "10.0.28000.1836", "versionType": "custom", "status": "affected"}]}], "descriptions": [{"value": "Null pointer dereference in Windows Redirected Drive Buffering allows an authorized attacker to deny service locally.", "lang": "en-US"}], "problemTypes": [{"descriptions": [{"description": "CWE-476: NULL Pointer Dereference", "lang": "en-US", "type": "CWE", "cweId": "CWE-476"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-04-16T14:18:30.906Z"}, "references": [{"name": "Windows Redirected Drive Buffering System Denial of Service Vulnerability", "tags": ["vendor-advisory", "patch"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32216"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en-US", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "baseSeverity": "MEDIUM", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C"}}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-32216", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-04-15T03:57:53.501482Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-15T09:13:17.342Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-32216", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-04-15T03:57:53.501482Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-15T09:09:10.161Z"}}], "cna": {"title": "Windows Redirected Drive Buffering System Denial of Service Vulnerability", "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "baseScore": 5.5, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C"}, "scenarios": [{"lang": "en-US", "value": "GENERAL"}]}], "affected": [{"vendor": "Microsoft", "product": "Windows 11 version 26H1", "versions": [{"status": "affected", "version": "10.0.28000.0", "lessThan": "10.0.28000.1836", "versionType": "custom"}], "platforms": ["ARM64-based Systems", "x64-based Systems"]}], "datePublic": "2026-04-14T14:00:00.000Z", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32216", "name": "Windows Redirected Drive Buffering System Denial of Service Vulnerability", "tags": ["vendor-advisory", "patch"]}], "descriptions": [{"lang": "en-US", "value": "Null pointer dereference in Windows Redirected Drive Buffering allows an authorized attacker to deny service locally."}], "problemTypes": [{"descriptions": [{"lang": "en-US", "type": "CWE", "cweId": "CWE-476", "description": "CWE-476: NULL Pointer Dereference"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:arm64:*", "vulnerable": true, "versionEndExcluding": "10.0.28000.1836", "versionStartIncluding": "10.0.28000.0"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-04-15T21:54:36.666Z"}}}, "cveMetadata": {"cveId": "CVE-2026-32216", "state": "PUBLISHED", "dateUpdated": "2026-04-15T21:54:36.666Z", "dateReserved": "2026-03-11T01:49:58.660Z", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "datePublished": "2026-04-14T16:57:38.302Z", "assignerShortName": "microsoft"}, "dataVersion": "5.2"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Null pointer dereference in Windows Redirected Drive Buffering allows an authorized attacker to deny service locally."}], "id": "CVE-2026-32216", "lastModified": "2026-04-14T18:17:28.880", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "secure@microsoft.com", "type": "Primary"}]}, "published": "2026-04-14T18:17:28.880", "references": [{"source": "secure@microsoft.com", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32216"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "secure@microsoft.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": ["arm64-based_systems", "x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[10.0.28000.0,10.0.28000.1836)"}}], "enrichment": {"confidence": 86.0, "confidence_source": "matching", "scores": [{"score": 86.0, "source": "matching"}]}, "original": {"product": "Windows 11 version 26H1", "source": "cna", "vendor": "Microsoft"}, "product": "windows_11_26h1", "vendor": "microsoft"}], "analysis": {"en": {"generated_at": "2026-04-14T20:42:07.321899+00:00", "value": {"mitigation_remediation": ["Check the Microsoft Security Advisory for CVE\u20112026\u201132216", "Verify that your system is running Windows 11 26H1 on ARM64", "Apply any available cumulative or security update that addresses this vulnerability", "If an update is not yet available, reduce user privileges that allow access to redirected drives as a temporary measure"], "summary": {"action": "Apply Patch", "impact": "Denial of Service"}, "threat_synthesis": {"affected_systems": "Microsoft Windows 11 version 26H1 on the ARM64 architecture is the only build affected by this vulnerability.", "description_and_impact": "A null pointer dereference in the Windows Redirected Drive Buffering component causes a local denial of service. An attacker who is authorized to use redirected drives can trigger the flaw, causing the affected system to stop processing redirected drive requests until it is restarted.", "risk_and_exploitability": "The CVSS score of 5.5 indicates moderate severity. Exploit probability data (EPSS) is not available and the vulnerability is not listed in the CISA KEV catalog. The flaw requires an authorized local account, limiting the attack surface to users with local privileges; if exploited, the system will experience a denial of service for redirected drive operations."}}}}, "created": "2026-04-15T15:00:06.177357+00:00", "updated": "2026-04-15T21:00:09.464933+00:00", "vendors": ["microsoft", "microsoft$PRODUCT$windows_11_26h1"]}