{"id":"CVE-2026-34350","state":"PUBLISHED","title":"Windows Storport Miniport Driver Denial of Service Vulnerability","description":"Null pointer dereference in Windows Storport Miniport Driver allows an unauthorized attacker to deny service over a network.","publishedAt":"2026-05-12T16:58:27.105Z","updatedAt":"2026-08-10T15:12:40.645Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","source":"microsoft"},"assigner":"microsoft","products":["Microsoft Windows Server 2025","Microsoft Windows Server 2025 (Server Core installation)"],"affected":[{"vendor":"Microsoft","product":"Windows Server 2025","versions":[{"version":"10.0.26100.0","status":"affected","lessThan":"10.0.26100.32860","versionType":"custom"}],"platforms":["x64-based Systems"]},{"vendor":"Microsoft","product":"Windows Server 2025 (Server Core installation)","versions":[{"version":"10.0.26100.0","status":"affected","lessThan":"10.0.26100.32860","versionType":"custom"}],"platforms":["x64-based Systems"]}],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34350"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/34xxx/CVE-2026-34350.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-34350","state":"PUBLISHED","datePublished":"2026-05-12T16:58:27.105Z","dateUpdated":"2026-08-10T15:12:40.645Z","assignerShortName":"microsoft","assignerOrgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","dateReserved":"2026-03-26T21:02:16.447Z"},"containers":{"cna":{"title":"Windows Storport Miniport Driver Denial of Service Vulnerability","descriptions":[{"lang":"en-US","value":"Null pointer dereference in Windows Storport Miniport Driver allows an unauthorized attacker to deny service over a network."}],"affected":[{"vendor":"Microsoft","product":"Windows Server 2025","versions":[{"version":"10.0.26100.0","status":"affected","lessThan":"10.0.26100.32860","versionType":"custom"}],"platforms":["x64-based Systems"]},{"vendor":"Microsoft","product":"Windows Server 2025 (Server Core installation)","versions":[{"version":"10.0.26100.0","status":"affected","lessThan":"10.0.26100.32860","versionType":"custom"}],"platforms":["x64-based Systems"]}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34350","name":"Windows Storport Miniport Driver Denial of Service Vulnerability","tags":["vendor-advisory","patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","baseSeverity":"MEDIUM","baseScore":6.5,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","description":"CWE-476: NULL Pointer Dereference","lang":"en-US","type":"CWE"}]}],"providerMetadata":{"shortName":"microsoft","orgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","dateUpdated":"2026-08-10T15:12:40.645Z"},"datePublic":"2026-05-12T14:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.26100.0","versionEndExcluding":"10.0.26100.32860"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.26100.0","versionEndExcluding":"10.0.26100.32860"}]}]}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-13T10:16:43.907558Z","id":"CVE-2026-34350","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-13T10:28:40.757Z"}}]}}}