{ "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" } } ] } }