{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-84696","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-09-01T23:24:17.537Z","datePublished":"2026-09-02T00:37:52.342Z","dateUpdated":"2026-09-02T13:03:26.372Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-09-02T00:37:52.342Z"},"datePublic":"2026-08-31T00:00:00.000Z","title":"Phison PS3111-S11 Controller Firmware Missing Authentication on Vendor Unique Commands","descriptions":[{"lang":"en","value":"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 handshake or exploit builds with no VUC lock to read and write controller memory and raw flash, persisting implants across power cycles."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Missing Authentication for Critical Function","cweId":"CWE-306","type":"CWE"}]}],"affected":[{"vendor":"Phison Electronics Corporation","product":"PS3111-S11 Controller Firmware","defaultStatus":"unaffected","versions":[{"version":"SBFQT1.3","status":"affected","versionType":"custom"}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"HIGH","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"HIGH","baseScore":9.3,"baseSeverity":"CRITICAL"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":8.2,"baseSeverity":"HIGH"}}],"references":[{"url":"https://trulycrisp.github.io/drivefirmware/phison_s11/","tags":["technical-description"]},{"url":"https://github.com/trulycrisp/psychite","tags":["exploit"]},{"url":"https://github.com/trulycrisp/disksec","tags":["exploit"]},{"name":"VulnCheck Advisory: Phison PS3111-S11 Controller Firmware Missing Authentication on Vendor Unique Commands","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/phison-ps3111-s11-controller-firmware-missing-authentication-on-vendor-unique-commands"}],"credits":[{"lang":"en","value":"Michael Herbert","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-02T13:03:14.346490Z","id":"CVE-2026-84696","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-02T13:03:26.372Z"}}]}}