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CVE-2026-21427

HIGH
8.5
CVSS Score
Published: January 8, 2026 at 04:12 AM UTC
Updated: June 17, 2026 at 10:18 AM UTC
10 products affected across 1 vendorAps S301USB DAC Amplifier APS-DA101JRUSB DAC Amplifier APS-DA101JS

Using USB DAC Amplifier APS-DA101JS by PIONEER CORPORATION?

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Severity
HIGH8.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Source: [email protected]
https://jpn.pioneer/ja/support/software/stellanova/dac_driver/
Source: [email protected]
https://jvn.jp/en/jp/JVN17956874/

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.5HIGHjpcert
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-427

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