CVE-2026-4652

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[15.0-RELEASE,p5)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "FreeBSD", "source": "cna", "vendor": "FreeBSD"}, "product": "freebsd", "vendor": "freebsd"}], "analysis": {"en": {"generated_at": "2026-03-26T15:34:39.672450+00:00", "value": {"mitigation_remediation": ["Update to the latest FreeBSD release or apply the security update that fixes the kernel panic in NVMe/TCP handling.", "Verify the patch by reviewing the FreeBSD security advisory at https://security.freebsd.org/advisories/FreeBSD-SA-26:07.nvmf.asc.", "If an immediate update is infeasible, block or restrict NVMe/TCP traffic at the network perimeter to prevent the CONNECT request from reaching the target."], "summary": {"action": "Immediate Patch", "impact": "Denial of Service"}, "threat_synthesis": {"affected_systems": "The vulnerability applies to systems running FreeBSD that expose an NVMe/TCP target. No specific version range is listed in the advisory, so any FreeBSD installation configured with NVMe/TCP support may be affected until a patch is applied.", "description_and_impact": "A null pointer dereference in the kernel can be triggered by a remote NVMe/TCP client when it sends a CONNECT command for an I/O queue that carries a bogus or stale control identifier. The fault causes the kernel to panic, resulting in an unauthenticated remote denial of service. This weakness is a classic Null Pointer Dereference (CWE\u2011476).", "risk_and_exploitability": "With a CVSS score of 7.5 the risk is considered moderate to high, yet the EPSS score of less than 1\u202f% indicates that exploitation is currently unlikely. The vulnerability is not listed in the CISA KEV catalog. An attacker merely needs network access to the NVMe/TCP target and can trigger the failure without authentication, making the attack vector network-based and straightforward once the target is reachable."}}}}, "created": "2026-03-26T11:30:17.786688+00:00", "updated": "2026-03-27T09:28:52.304070+00:00", "vendors": ["freebsd", "freebsd$PRODUCT$freebsd"]}