What’s Vulnerable › Vulnerabilities

CVE-2023-53962: SOUND4 IMPACT/FIRST/PULSE/Eco v2.x Unauthenticated Directory Traversal File Write

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-12-22 · updated 2026-06-17
• Weakness: CWE-22

Description

SOUND4 IMPACT/FIRST/PULSE/Eco v2.x contains an unauthenticated directory traversal vulnerability that allows remote attackers to write arbitrary files through the 'upgfile' parameter in upload.cgi. Attackers can exploit the vulnerability by sending crafted multipart form-data POST requests with directory traversal sequences to write files to unintended system locations.

Affected products

• Sound4 Big Voice2 Firmware: 1.30
• Sound4 Big Voice4 Firmware: 1.2
• Sound4 First Firmware: 2.15, 1.69
• Sound4 Impact Eco Firmware: 1.16
• Sound4 Impact Firmware: 2.15, 1.69
• Sound4 Pulse Eco Firmware: 1.16
• Sound4 Pulse Firmware: 2.15, 1.69
• Sound4 Stream Extension: 2.4.29
• Sound4 Wm2 Firmware: 1.11

References

• https://web.archive.org/web/20221207074555/https://www.sound4.com/
• https://www.exploit-db.com/exploits/51172
• https://www.vulncheck.com/advisories/sound-impactfirstpulseeco-x-unauthenticated-directory-traversal-file-write
• https://www.zeroscience.mk/en/vulnerabilities/ZSL-2022-5730.php
• https://www.zeroscience.mk/en/vulnerabilities/ZSL-2022-5730.php

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