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CVE-2026-84696— Phison PS3111-S11 Controller Firmware Missing Authentication on Vendor Unique Commands

Quick assessment

Affected
Phison Electronics Corporation PS3111-S11 Controller Firmware
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Phison Electronics PS3111-S11 Controller Firmware是Phison Electronics公司的一款固态硬盘控制器固件。 Phison Electronics PS3111-S11 Controller Firmware SBFQT1.3及之前版本存在授权问题漏洞，该漏洞源于ATA接口暴露特权厂商唯一命令，且缺少或可绕过的认证机制，可能导致攻击者绕过基于弱CRC-16的解锁握手或利用没有VUC锁的构建，读取和写入控制器内存和原始闪存，并跨电源周期持久化植入。

CVSS 8.2 · High EPSS 0.22% · P12

Affected Version Matrix 1

VendorProduct Version RangeStatus
Phison Electronics Corporation PS3111-S11 Controller Firmware SBFQT1.3 affected
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I. Basic Information for CVE-2026-84696

Vulnerability Information
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Vulnerability Title
Phison PS3111-S11 Controller Firmware Missing Authentication on Vendor Unique Commands
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Phison Electronics PS3111-S11 Controller Firmware 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Phison Electronics PS3111-S11 Controller Firmware是Phison Electronics公司的一款固态硬盘控制器固件。 Phison Electronics PS3111-S11 Controller Firmware SBFQT1.3及之前版本存在授权问题漏洞，该漏洞源于ATA接口暴露特权厂商唯一命令，且缺少或可绕过的认证机制，可能导致攻击者绕过基于弱CRC-16的解锁握手或利用没有VUC锁的构建，读取和写入控制器内存和原始闪存，并跨电源周期持久化植入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Phison Electronics Corporation PS3111-S11 Controller Firmware SBFQT1.3 -

II. Public POCs for CVE-2026-84696

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III. Intelligence Information for CVE-2026-84696

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Vendor Advisories for CVE-2026-84696 (1)

Proof of Concept for CVE-2026-84696 (1)

IV. Related Vulnerabilities

Same product: PS3111-S11 Controller Firmware
Same vendor: Phison Electronics Corporation
Same weakness: CWE-306

V. Comments for CVE-2026-84696

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