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.
History

Thu, 03 Sep 2026 16:15:00 +0000

Type Values Removed Values Added
First Time appeared Phison Electronics Corporation
Phison Electronics Corporation ps3111-s11 Controller Firmware
Vendors & Products Phison Electronics Corporation
Phison Electronics Corporation ps3111-s11 Controller Firmware

Wed, 02 Sep 2026 10:45:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 02 Sep 2026 01:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Phison PS3111-S11 Controller Firmware Missing Authentication on Vendor Unique Commands
Weaknesses CWE-306
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-09-02T00:37:52.342Z

Updated: 2026-09-02T13:03:26.372Z

Reserved: 2026-09-01T23:24:17.537Z

Link: CVE-2026-84696

cve-icon Vulnrichment

Updated: 2026-09-02T13:03:19.979Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-02T01:17:24.560

Modified: 2026-09-10T15:47:22.273

Link: CVE-2026-84696

cve-icon Redhat

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