{"schema":"threatline.record/2","record":{"id":"CVE-2026-88833","aliases":[],"summary":"Busybox: busybox: udhcpc integer underflow in dhcp packet length calculation causes denial of service","details":"A flaw was found in BusyBox's udhcpc DHCP client. When processing raw DHCP packets, the client replaces the validated packet length with an attacker-controlled value from the IP header without re-validating the minimum size. This leads to an integer underflow when subtracting header sizes, causing a subsequent memory copy with a massively oversized length. An attacker on the same network segment can send a specially crafted packet to crash the DHCP client, resulting in denial of service and loss of network connectivity.","categories":["Operating systems"],"product":"Red Hat Hardened Images","vendor":"Red Hat","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88833","source_modified_at":"2026-10-16T22:22:10.834Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Red Hat Hardened Images","vendor":"Red Hat","versions":[],"defaultStatus":"affected"}],"fixed_versions":[],"cvss":6.5,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00188,"percentile":0.08038,"score_date":"2026-10-23"},"published_at":"2026-10-13T16:56:11.068Z","modified_at":"2026-10-16T22:22:10.834Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-88833","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-16T22:22:10.834Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-88833","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://access.redhat.com/security/cve/CVE-2026-88833","tags":["vdb-entry","x_refsource_REDHAT"]},{"source":"CVE List","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2531347","tags":["issue-tracking","x_refsource_REDHAT"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-16T22:21:57.578888Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-16T22:22:10.834Z","content_hash":"ca2a7c37763ab8edddb22a991e09eb07ad1e666862bdc48d88caba3a449277d7"}}