SOUND4 Impact Firmware Upload path traversal

Summaryinfo

A vulnerability was found in SOUND4 Impact, Pulse, First, Pulse Eco, BigVoice4, BigVoice2 and Stream. It has been declared as critical. This vulnerability affects unknown code of the component Firmware Upload Handler. Executing a manipulation can lead to path traversal. This vulnerability is registered as CVE-2022-50796. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in SOUND4 Impact, Pulse, First, Pulse Eco, BigVoice4, BigVoice2 and Stream. It has been declared as very critical. This vulnerability affects some unknown processing of the component Firmware Upload Handler. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was published by Gjoko Krstic as 170268. The advisory is shared for download at zeroscience.mk. This vulnerability was named CVE-2022-50796 since 12/26/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 01/17/2026). The MITRE ATT&CK project declares the attack technique as T1006.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at X-Force (247951). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• SOUND4

Name

• BigVoice2
• BigVoice4
• First
• Impact
• Pulse
• Pulse Eco
• Stream

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Once again VulDB remains the best source for vulnerability data.

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