VULNERABILITY INTELLIGENCE
CVE-2026-84696
CVSS score8.2 HIGH
EPSS probability0.22%
CISA KEVNot currently listed
Published2026-09-02
Last modified2026-09-10
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
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.
Weakness classification
- disclosure@vulncheck.com: CWE-306