Critical 9.8Published Dec 22, 2025

CVE-2023-53955SOUND4 IMPACT/FIRST/PULSE/Eco v2.x Authorization Bypass via Insecure Object References

Updated under an hour ago (Oct 28, 2026, 2:30 AM ET)

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It affects SOUND4 Ltd. Impact/Pulse/First and 14 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for SOUND4 Ltd. Impact/Pulse/First

Exploited in the last 30 days

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.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-639
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Analyzed
Record last updated: Oct 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

SOUND4 Ltd. Impact/Pulse/First sound4:impact_pulse_first (from the name)	Version 2: 1.1/2.15	CNA record
SOUND4 Ltd. Impact/Pulse Eco sound4:impact_pulse_eco (from the name)	1.16	CNA record
SOUND4 Ltd. BigVoice4 sound4:bigvoice4 (from the name)	1.2	CNA record
SOUND4 Ltd. BigVoice2 sound4:bigvoice2 (from the name)	1.30	CNA record
SOUND4 Ltd. Stream sound4:stream (from the name)	1.1/2.4.29	CNA record
Kantar Media WM2 kantar_media:wm2 (from the name)	1.11	CNA record
sound4 stream_extension sound4:stream_extension	2.4.29	NVD
sound4 wm2_firmware sound4:wm2_firmware	1.11	NVD
sound4 big_voice2_firmware sound4:big_voice2_firmware	1.30	NVD
sound4 big_voice4_firmware sound4:big_voice4_firmware	1.2	NVD
1–10 of 15

References

References

https://www.exploit-db.com/exploits/51169	exploit, third-party-advisory, vdb-entry
https://web.archive.org/web/20221207074555/https://www.sound4.com/	product
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2022-5723.php	third-party-advisory, exploit
https://www.vulncheck.com/advisories/sound-impactfirstpulseeco-x-authorization-bypass-via-insecure-object-references	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.