{"id":"CVE-2026-0849","title":"crypto: ATAES132A response length allows stack buffer overflow","summary":"Malformed ATAES132A responses with an oversized length field overflow a 52-byte stack buffer in the Zephyr crypto driver, allowing a compromised device or bus attacker to corrupt kernel memory and potentially hijack execution.","severity":"low","cvss":3.8,"cvssVector":"CVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L","cvssSource":"cna","cwe":["CWE-120"],"vendor":"zephyrproject-rtos","product":"Zephyr","affected":["Zephyr < 4.4.0"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-03-17T15:04:55.949281Z"},"exploitAvailable":true,"published":"2026-03-14","updated":"2026-10-15","sourceUpdated":"2026-10-15T22:09:57.963Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-0849","references":[{"url":"https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-ff4p-3ggg-prp6"}],"tags":["cve.org","exploit-available"],"epss":0.00244,"epssPercentile":0.14548,"ingestedAt":"2026-10-15T22:48:25.564Z","slug":"CVE-2026-0849","body":"## Overview\n\nMalformed ATAES132A responses with an oversized length field overflow a 52-byte stack buffer in the Zephyr crypto driver, allowing a compromised device or bus attacker to corrupt kernel memory and potentially hijack execution.\n\n## Affected\n\n- `Zephyr < 4.4.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":33,"depthScoreParts":{"impact":20.9,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[]}