CVE-2026-84696: critical vulnerability in Phison Electronics Corporation PS3111-S11…
Phison PS3111-S11 Controller Firmware Missing Authentication on Vendor Unique Commands
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9.3epss 0.2%
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.
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
Affected products
Phison Electronics Corporation · PS3111-S11 Controller Firmwarepublic PoCs found — 2
cve_referencegithub.com/trulycrisp/psychiteunverifiedcve_referencegithub.com/trulycrisp/disksecunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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