Vulnerability · Published Dec 22, 2025 · Assigned by VulnCheck
CVE-2023-53955SOUND4 IMPACT/FIRST/PULSE/Eco v2.x Authorization Bypass via Insecure Object References
Critical 9.8
In plain English
A critical-severity authorization bypass via user-controlled key in WM2 from Kantar Media. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 58% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.9%top 41.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| SOUND4 Ltd. | Impact/Pulse/First | Version 2: 1.1/2.15 |
| SOUND4 Ltd. | Impact/Pulse Eco | 1.16 |
| SOUND4 Ltd. | BigVoice4 | 1.2 |
| SOUND4 Ltd. | BigVoice2 | 1.30 |
| SOUND4 Ltd. | Stream | 1.1/2.4.29 |
| Kantar Media | WM2 | 1.11 |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- ExploitDB-51169 exploit
- SOUND4 Official Product Homepage product
- Zero Science Lab Disclosure (ZSL-2022-5723) third-party-advisory
- VulnCheck Advisory: SOUND4 IMPACT/FIRST/PULSE/Eco v2.x Authorization Bypass via Insecure Object References third-party-advisory