#VU121093 Insecure DLL loading in Pioneer Corporation products - CVE-2026-21427

Vulnerability identifier: #VU121093

Vulnerability risk: Low

CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2026-21427

CWE-ID: CWE-427

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerable software:
USB DAC Amplifier APS-DA101JS
USB DAC Amplifier APS-DA101JR
USB DAC Amplifier APS-DA101JGL
USB DAC Amplifier APS-DA101JGR
Stellanova Lite APS-S201JS
Stellanova Lite APS-S201JR
Stellanova Lite APS-S201JGL
Stellanova Lite APS-S201JGR
Stelllanova Limited APS-S202J-LM
Stelllanova APS-S301 Series

Software vendor:
Pioneer Corporation

The vulnerability allows a local attacker to compromise vulnerable system.

The vulnerability exists due to the application loads DLL libraries in an insecure manner. A local attacker can place a specially crafted .dll file and execute arbitrary code on the target system.

Install updates from vendor's website.

• https://jvn.jp/en/jp/JVN17956874/index.html