{"id":"CVE-2026-32708","summary":"Zenoh uORB Subscriber Allows Arbitrary Stack Allocation (PX4/PX4-Autopilot)","details":"PX4 autopilot is a flight control solution for drones. Prior to 1.17.0-rc2, the Zenoh uORB subscriber allocates a stack VLA directly from the incoming payload length without bounds. A remote Zenoh publisher can send an oversized fragmented message to force an unbounded stack allocation and copy, causing a stack overflow and crash of the Zenoh bridge task. This vulnerability is fixed in 1.17.0-rc2.","aliases":["GHSA-69g4-hcqf-j45p"],"modified":"2026-08-12T03:51:09.875154107Z","published":"2026-03-13T21:18:53.025Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-121"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32708.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32708.json"},{"type":"ADVISORY","url":"https://github.com/PX4/PX4-Autopilot/security/advisories/GHSA-69g4-hcqf-j45p"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32708"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/px4/px4-autopilot","events":[{"introduced":"0"},{"fixed":"d6f12ad1c4f70ad3230afd7d86e971421e02fef4"},{"introduced":"c2fb48990aacebc938c4e9998c7d5348f858fd22"},{"last_affected":"61904bc14a9c34f5f87012410b5f473e074e55d8"}],"database_specific":{"cpe":["cpe:2.3:a:dronecode:px4_drone_autopilot:*:*:*:*:*:*:*:*","cpe:2.3:a:dronecode:px4_drone_autopilot:1.17.0:alpha1:*:*:*:*:*:*","cpe:2.3:a:dronecode:px4_drone_autopilot:1.17.0:beta1:*:*:*:*:*:*","cpe:2.3:a:dronecode:px4_drone_autopilot:1.17.0:rc1:*:*:*:*:*:*"],"extracted_events":[{"introduced":"0"},{"fixed":"1.17.0"},{"introduced":"1.17.0-alpha1"},{"last_affected":"1.17.0-alpha1"},{"introduced":"1.17.0-beta1"},{"last_affected":"1.17.0-beta1"},{"introduced":"1.17.0-rc1"},{"last_affected":"1.17.0-rc1"}],"source":["CPE_RANGE","CPE_STRING"]}}],"versions":["1.17.0-alpha1","1.17.0-beta1","1.17.0-rc1","v1.17.0-rc2","v1.17.0-rc1","v1.17.0-beta1","v1.17.0-alpha1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-32708.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}