CVE-2026-80225

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{"bugzilla": {"description": "unbound: Unbound: Denial of Service via continuous queries on TCP/DoT connection", "id": "2535055", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2535055"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-1050", "details": ["A flaw was found in Unbound. A malicious actor can exploit a vulnerability in the TCP/DoT reading procedure, which lacks a limit on consecutive reads. By continuously streaming distinct uncached names over a TCP/DoT connection, an attacker can monopolize a worker's event loop. This can lead to a degradation of service, effectively causing a Denial of Service (DoS) for legitimate users."], "name": "CVE-2026-80225", "package_state": [{"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-16T08:30:04Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80225\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80225\nhttps://www.nlnetlabs.nl/downloads/unbound/CVE-2026-80225.txt"], "threat_severity": "Moderate"}

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