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CVE-2022-50796 SOUND4 IMPACT/FIRST/PULSE/Eco <=2.x Unauthenticated Remote Code Execution via upload.cgi

Critical 9.3 Published Updated

Unauthenticated attackers can exploit a path traversal flaw in the firmware upload script to write malicious files and execute arbitrary code on SOUND4 audio processors.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2022-50796?

CVE-2022-50796 is a critical path traversal vulnerability in Kantar Media BigVoice2, published on 30 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

SOUND4 IMPACT/FIRST/PULSE/Eco <=2.x contains an unauthenticated remote code execution vulnerability in the firmware upload functionality with path traversal flaw. Attackers can exploit the upload.cgi script to write malicious files to the system with www-data permissions, enabling unauthorized access and code execution.

Weakness: CWE-22

Which versions are affected by CVE-2022-50796?

It affects 9 products.

Products include Sound4 Big Voice2 Firmware, Sound4 Big Voice4 Firmware, Sound4 First Firmware, Sound4 Impact Eco Firmware, Sound4 Impact Firmware, Sound4 Pulse Eco Firmware and 3 more.

How do I fix CVE-2022-50796?

No fix has been published for CVE-2022-50796 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2022-50796 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-50796 exists.

Sources

Also known as GHSA-hv34-rhhr-q53f.

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