{"id":"CVE-2026-32706","summary":"PX4 autopilot has a global buffer overflow in crsf_rc via oversized variable-length known packet","details":"PX4 autopilot is a flight control solution for drones. Prior to 1.17.0-rc2, The crsf_rc parser accepts an oversized variable-length known packet and copies it into a fixed 64-byte global buffer without a bounds check. In deployments where crsf_rc is enabled on a CRSF serial port, an adjacent/raw-serial attacker can trigger memory corruption and crash PX4. This vulnerability is fixed in 1.17.0-rc2.","aliases":["GHSA-mqgj-hh4g-fg5p"],"modified":"2026-04-12T20:14:05.178830Z","published":"2026-03-13T21:17:02.719Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32706.json","cwe_ids":["CWE-120","CWE-787"],"cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32706.json"},{"type":"ADVISORY","url":"https://github.com/PX4/PX4-Autopilot/security/advisories/GHSA-mqgj-hh4g-fg5p"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32706"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/px4/px4-autopilot","events":[{"introduced":"0"},{"fixed":"0b6e4687defb353a34201951809efd3f0040a9ba"}]}],"versions":["v1.0.0-rc1","v1.0.0-rc2","v1.0.0-rc3","v1.0.0beta2","v1.0.0rc10","v1.0.0rc12","v1.0.0rc7","v1.0.0rc8","v1.0.0rc9","v1.1.0beta1","v1.1.0beta3","v1.1.1","v1.1.2","v1.1.3","v1.10.0-beta1","v1.10.0-beta2","v1.10.0-beta3","v1.10.0-beta4","v1.11.0-beta1","v1.11.0-beta2","v1.11.0-rc1","v1.11.0-rc2","v1.11.0-rc3","v1.12.0","v1.12.0-beta2","v1.12.0-beta3","v1.12.0-beta4","v1.12.0-beta5","v1.12.0-beta6","v1.12.0-rc1","v1.13.0-alpha1","v1.13.0-beta1","v1.14.0-beta1","v1.14.0-beta2","v1.15.0-alpha1","v1.15.0-beta1","v1.16.0-alpha1","v1.16.0-alpha2","v1.16.0-beta1","v1.16.0-rc1","v1.17.0-alpha1","v1.17.0-beta1","v1.17.0-rc1","v1.3.0rc1","v1.3.0rc2","v1.3.0rc3","v1.3.2","v1.4.0rc1","v1.4.0rc2","v1.4.0rc3","v1.4.0rc4","v1.4.1","v1.4.1rc1","v1.4.1rc2","v1.4.1rc3","v1.4.1rc4","v1.4.2","v1.4.3","v1.4.4rc1","v1.5.0","v1.5.1","v1.5.1rc2","v1.5.1rc3","v1.5.1rc4","v1.5.2","v1.6.0-rc2","v1.6.0-rc3","v1.6.0-rc4","v1.6.0rc1","v1.6.2","v1.6.4","v1.6.5","v1.7.0","v1.7.0-rc0","v1.7.0-rc1","v1.7.0-rc2","v1.7.0-rc3","v1.7.0-rc4","v1.7.1","v1.7.2","v1.7.3","v1.7.3beta","v1.7.4beta","v1.8.0","v1.8.0-beta1","v1.8.0-beta2","v1.8.0-rc0","v1.9.0","v1.9.0-alpha","v1.9.0-beta1","v1.9.0-beta2","v1.9.0-beta3","v1.9.0-rc0","v1.9.0-rc1","v1.9.0-rc2"],"database_specific":{"vanir_signatures_modified":"2026-04-12T20:14:05Z","vanir_signatures":[{"signature_version":"v1","signature_type":"Line","id":"CVE-2026-32706-8741f513","digest":{"line_hashes":["67693136990830957487318119173900356909","66619955044416162627791375628789032959","82079087948384373130544456721427948334","19564699393231592692988065433606806311","39839865920697555104405496522726657399","65807866290241928387326196575495664293","7303528363826701270978354797955542450"],"threshold":0.9},"deprecated":false,"target":{"file":"src/modules/mavlink/mavlink_ftp.h"},"source":"https://github.com/px4/px4-autopilot/commit/0b6e4687defb353a34201951809efd3f0040a9ba"},{"signature_version":"v1","signature_type":"Line","id":"CVE-2026-32706-9203388c","digest":{"line_hashes":["273953935082956037420025022101044574717","110601522846328491563493342664872427862","34306035577689530466562211034699807319","49578622599169832155167781920557990289"],"threshold":0.9},"deprecated":false,"target":{"file":"src/modules/mavlink/mavlink_ftp.cpp"},"source":"https://github.com/px4/px4-autopilot/commit/0b6e4687defb353a34201951809efd3f0040a9ba"}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-32706.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H"}]}