{"id":"CVE-2026-4652","state":"PUBLISHED","title":"Remote denial of service via null pointer dereference","description":"On a system exposing an NVMe/TCP target, a remote client can trigger a kernel panic by sending a CONNECT command for an I/O queue with a bogus or stale CNTLID.\n\nAn attacker with network access to the NVMe/TCP target can trigger an unauthenticated Denial of Service condition on the affected machine.","publishedAt":"2026-03-26T06:15:00.850Z","updatedAt":"2026-03-26T13:31:31.356Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"freebsd","products":["FreeBSD FreeBSD"],"affected":[{"vendor":"FreeBSD","product":"FreeBSD","defaultStatus":"unknown","versions":[{"version":"15.0-RELEASE","status":"affected","lessThan":"p5","versionType":"release"}],"modules":["nvmf"]}],"references":["https://security.freebsd.org/advisories/FreeBSD-SA-26:07.nvmf.asc"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/4xxx/CVE-2026-4652.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-4652","state":"PUBLISHED","datePublished":"2026-03-26T06:15:00.850Z","dateUpdated":"2026-03-26T13:31:31.356Z","assignerShortName":"freebsd","assignerOrgId":"63664ac6-956c-4cba-a5d0-f46076e16109","dateReserved":"2026-03-23T14:35:04.472Z"},"containers":{"cna":{"title":"Remote denial of service via null pointer dereference","descriptions":[{"lang":"en","value":"On a system exposing an NVMe/TCP target, a remote client can trigger a kernel panic by sending a CONNECT command for an I/O queue with a bogus or stale CNTLID.\n\nAn attacker with network access to the NVMe/TCP target can trigger an unauthenticated Denial of Service condition on the affected machine."}],"affected":[{"vendor":"FreeBSD","product":"FreeBSD","defaultStatus":"unknown","versions":[{"version":"15.0-RELEASE","status":"affected","lessThan":"p5","versionType":"release"}],"modules":["nvmf"]}],"references":[{"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:07.nvmf.asc","tags":["vendor-advisory"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","description":"CWE-476: NULL Pointer Dereference","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"freebsd","orgId":"63664ac6-956c-4cba-a5d0-f46076e16109","dateUpdated":"2026-03-26T06:15:00.850Z"},"datePublic":"2026-03-26T05:00:00.000Z","credits":[{"lang":"en","type":"finder","value":"Nikolay Denev <ndenev@gmail.com>"}],"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-03-26T13:31:21.926248Z","id":"CVE-2026-4652","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-26T13:31:31.356Z"}}]}}}