CVE-2023-53963 SOUND4 IMPACT/FIRST/PULSE/Eco v2.x Unauthenticated Remote Command Injection

Critical 9.3 Published 22 Dec 2025 Updated 1 Oct 2026

Remote attackers can execute arbitrary shell commands via the password parameter in login and index scripts, requiring immediate patching.

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-2023-53963?

CVE-2023-53963 is a critical command injection vulnerability in Kantar Media BigVoice2, published on 22 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 v2.x contains an unauthenticated OS command injection vulnerability that allows remote attackers to execute arbitrary shell commands through the 'password' parameter. Attackers can exploit the login.php and index.php scripts by injecting shell commands via the 'password' POST parameter to execute commands with web server privileges.

Weakness: CWE-78

Which versions are affected by CVE-2023-53963?

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-2023-53963?

No fix has been published for CVE-2023-53963 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2023-53963 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-53963 exists.

Sources

Also known as GHSA-vw7m-92hg-3cxx.