{"id":"CVE-2018-18068","aliases":["EUVD-2018-9807","GHSA-jr3x-5j37-8776"],"status":"published","title":"The ARM-based hardware debugging feature on Raspberry Pi 3 module B+ and possibly other devices...","description":"The ARM-based hardware debugging feature on Raspberry Pi 3 module B+ and possibly other devices allows non-secure EL1 code to read/write any EL3 (the highest privilege level in ARMv8) memory/register via inter-processor debugging. With a debug host processor A running in non-secure EL1 and a debug target processor B running in any privilege level, the debugging feature allows A to halt B and promote B to any privilege level. As a debug host, A has full control of B even if B owns a higher privilege level than A. Accordingly, A can read/write any EL3 memory/register via B. Also, with this memory access, A can execute arbitrary code in EL3.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.03326,"percentile":0.88693,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-668"],"published":"2019-04-04T19:13:46Z","modified":"2026-06-17T01:46:43Z","products":[{"vendor":"raspberrypi","product":"raspberry_pi_3_model_b\\+_firmware"}],"references":[{"url":"https://www.computer.org/csdl/proceedings-article/sp/2019/666000b157/17D45WHONhv","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"http://www.cs.wayne.edu/fengwei/paper/nailgun-sp19.pdf","tags":["x_refsource_MISC","x_transferred","Exploit","Technical Description","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-18068"},{"url":"https://github.com/advisories/GHSA-jr3x-5j37-8776"}],"sources":{"cve":[{"id":"CVE-2018-18068","description":"The ARM-based hardware debugging feature on Raspberry Pi 3 module B+ and possibly other devices allows non-secure EL1 code to read/write any EL3 (the highest privilege level in ARMv8) memory/register via inter-processor debugging. With a debug host processor A running in non-secure EL1 and a debug target processor B running in any privilege level, the debugging feature allows A to halt B and promote B to any privilege level. As a debug host, A has full control of B even if B owns a higher privilege level than A. Accordingly, A can read/write any EL3 memory/register via B. Also, with this memory access, A can execute arbitrary code in EL3.","status":"published","published":"2019-04-04T19:13:46Z","modified":"2024-08-05T11:01:14.911Z","updated_at":"2026-11-02T14:35:11.799349Z"}],"euvd":[{"id":"EUVD-2018-9807","description":"The ARM-based hardware debugging feature on Raspberry Pi 3 module B+ and possibly other devices allows non-secure EL1 code to read/write any EL3 (the highest privilege level in ARMv8) memory/register via inter-processor debugging. With a debug host processor A running in non-secure EL1 and a debug target processor B running in any privilege level, the debugging feature allows A to halt B and promote B to any privilege level. As a debug host, A has full control of B even if B owns a higher privilege level than A. Accordingly, A can read/write any EL3 memory/register via B. Also, with this memory access, A can execute arbitrary code in EL3.","status":"published","published":"2019-04-04T19:13:46Z","modified":"2024-08-05T11:01:14Z","updated_at":"2026-11-03T02:39:37.172177Z"}],"ghsa":[{"id":"GHSA-jr3x-5j37-8776","title":"The ARM-based hardware debugging feature on Raspberry Pi 3 module B+ and possibly other devices...","description":"The ARM-based hardware debugging feature on Raspberry Pi 3 module B+ and possibly other devices allows non-secure EL1 code to read/write any EL3 (the highest privilege level in ARMv8) memory/register via inter-processor debugging. With a debug host processor A running in non-secure EL1 and a debug target processor B running in any privilege level, the debugging feature allows A to halt B and promote B to any privilege level. As a debug host, A has full control of B even if B owns a higher privilege level than A. Accordingly, A can read/write any EL3 memory/register via B. Also, with this memory access, A can execute arbitrary code in EL3.","status":"published","published":"2022-05-13T01:50:36Z","modified":"2023-02-02T05:01:58Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-668"],"updated_at":"2026-11-02T14:51:19.116576Z"}],"nvd":[{"id":"CVE-2018-18068","description":"The ARM-based hardware debugging feature on Raspberry Pi 3 module B+ and possibly other devices allows non-secure EL1 code to read/write any EL3 (the highest privilege level in ARMv8) memory/register via inter-processor debugging. With a debug host processor A running in non-secure EL1 and a debug target processor B running in any privilege level, the debugging feature allows A to halt B and promote B to any privilege level. As a debug host, A has full control of B even if B owns a higher privilege level than A. Accordingly, A can read/write any EL3 memory/register via B. Also, with this memory access, A can execute arbitrary code in EL3.","status":"published","published":"2019-04-04T20:29:00.22Z","modified":"2026-06-17T01:46:43.97Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-668"],"updated_at":"2026-11-02T14:04:55.136632Z"}]}}