{"id":"CVE-2026-84696","title":"Phison PS3111-S11 controller firmware versions through SBFQT1.3 expose privileged vendor unique commands over the ATA interface with absent or defeatable authentication mechanisms","summary":"Phison PS3111-S11 controller firmware versions through SBFQT1.3 expose privileged vendor unique commands over the ATA interface with absent or defeatable authentication mechanisms. Attackers can bypass the weak CRC-16 based unlock handsh…","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","cwe":["CWE-306"],"published":"2026-09-02","updated":"2026-09-10","sourceUpdated":"2026-09-10T15:47:22.273","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-84696","references":[{"url":"https://github.com/trulycrisp/disksec","label":"disclosure@vulncheck.com"},{"url":"https://github.com/trulycrisp/psychite","label":"disclosure@vulncheck.com"},{"url":"https://trulycrisp.github.io/drivefirmware/phison_s11/","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/phison-ps3111-s11-controller-firmware-missing-authentication-on-vendor-unique-commands","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"epss":0.00149,"epssPercentile":0.04478,"ingestedAt":"2026-09-10T15:53:17.040Z","slug":"CVE-2026-84696","body":"## Overview\n\nPhison PS3111-S11 controller firmware versions through SBFQT1.3 expose privileged vendor unique commands over the ATA interface with absent or defeatable authentication mechanisms. Attackers can bypass the weak CRC-16 based unlock handshake or exploit builds with no VUC lock to read and write controller memory and raw flash, persisting implants across power cycles.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}