Format String Vulnerability in SOUND4 LinkAndShare Transmitter Affecting Environment Variables
CVE-2023-53966

9.3CRITICAL

Key Information:

Vendor

Sound4 Ltd.

Status
Sound4 Linkandshare Transmitter
Vendor
CVE Published:
22 December 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2023-53966?

The SOUND4 LinkAndShare Transmitter version 1.1.2 is affected by a format string vulnerability that can be exploited through crafted environment variables. Specifically, attackers can manipulate the username environment variable with carefully constructed format string payloads, potentially leading to memory stack overflows. This vulnerability allows them to execute arbitrary code, compromising system integrity and potentially causing application crashes.

Affected Version(s)

SOUND4 LinkAndShare Transmitter 1.1.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2023-53966 - Proof of Concept

References

https://www.exploit-db.com/exploits/51259
exploit
https://web.archive.org/web/20221207074555/https://www.so...
product
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-57...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

LiquidWorm as Gjoko Krstic of Zero Science Lab
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CVE-2023-53966 : Format String Vulnerability in SOUND4 LinkAndShare Transmitter Affecting Environment Variables