CVE-2026-21427

HIGH EPSS 7.1%

Published Jan 8, 20265mo ago · Modified Jun 17, 20261w ago

8.5 CVSS 4.0

High

Published Jan 8, 2026 5mo ago

Last Modified Jun 17, 2026 1w ago

Description

The installers for multiple products provided by PIONEER CORPORATION contain an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries. As a result, arbitrary code may be executed with the privileges of the running installer.

CVSS Details

Base Score

8.5

Exploitability

—

Impact

—

Vector string

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:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector Local

Attack Complexity Low

Privileges Required None

User Interaction P

Scope X

Threat Intelligence

EPSS Exploit Probability

7.1% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-427

References 2

jpn.pioneer https://jpn.pioneer/ja/support/software/stellanova/dac_driver/
jvn.jp https://jvn.jp/en/jp/JVN17956874/

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.