{"schemaVersion":3,"id":"CVE-2026-5072","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A bitwise shift vulnerability in Zephyr's PTP subsystem allows a remote attacker to cause undefined behavior and potential system crashes. An attacker sends a crafted PTP_MSG_MANAGEMENT message to set an unvalidated negative log_announce_interval value in the port's data set. When a subsequent PTP_MSG_ANNOUNCE message is processed, port_timer_set_timeout_random computes a timeout as NSEC_PER_SEC >> -log_seconds; if the attacker-supplied value is sufficiently negative (e.g., -127), the shift amount exceeds the 64-bit integer width, triggering undefined behavior in C. This can cause a system crash via a compiler-generated illegal instruction trap on some architectures, or produce an erroneous zero timeout leading to resource starvation loops or other logical errors.","dates":{"published":"2026-05-22T07:00:36.025Z","modified":"2026-10-15T22:10:26.851Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.5,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.0032,"percentile":0.23651,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0.02000000000000001,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.003},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.003,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.003,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.003,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.003,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.003,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.003,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.003,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.003,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.003,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.003,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.0032,"percentile":0.23651}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.003,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.003,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.003,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0032,"percentile":null},{"date":"2026-10-11T00:00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