CVE-2023-53955: SOUND4 IMPACT/FIRST/PULSE/Eco v2.x contains an insecure direct object reference vulnerability that allows attackers to…
CVE-2023-53955 · Severity: critical · CVSS 9.8 · Published 2025-12-22
SOUND4 IMPACT/FIRST/PULSE/Eco v2.x contains an insecure direct object reference vulnerability that allows attackers to bypass authorization and access hidden system resources. Attackers can exploit the vulnerability by manipulating user-supplied input to execute privileged functionalities without proper authentication.
No. Junglewise Threat Intelligence has no report of CVE-2023-53955 being exploited in the wild.
How severe is CVE-2023-53955?
Critical severity, with a CVSS score of 9.8, published 22 December 2025.
Which products and versions are affected?
Sound4 Big Voice2, Sound4 Big Voice2 Firmware, Sound4 Big Voice4, Sound4 Big Voice4 Firmware and 13 more. The advisory does not name versions.
Is there a fix for CVE-2023-53955?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2023-53955?
Check whether you run Sound4 Big Voice2, Sound4 Big Voice2 Firmware, Sound4 Big Voice4 or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.