CVE-2023-53966

Name: CVE-2023-53966
Creator: NVD / NIST
Published: 2025-12-22T22:16:01.193+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.3/10EPSS 0.62%

Last modified Jun 17, 2026

CVE-2023-53966 is a critical-severity vulnerability rated 9.3/10 on the CVSS scale. SOUND4 LinkAndShare Transmitter 1.1.2 contains a format string vulnerability that allows attackers to trigger memory stack overflows through maliciously crafted environment variables. Attackers can manipulate the username environment variable with format string payloads to potentially execute arbitrary code and crash the application.. EPSS estimates a 0.62% chance of exploitation in the next 30 days.

Description

SOUND4 LinkAndShare Transmitter 1.1.2 contains a format string vulnerability that allows attackers to trigger memory stack overflows through maliciously crafted environment variables. Attackers can manipulate the username environment variable with format string payloads to potentially execute arbitrary code and crash the application.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

9.3/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.62%

45.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-134

Affected Software

Vendor	Product	Versions
Sound4	Linkandshare Transmitter	1.1.2

References

https://web.archive.org/web/20221207074555/https://www.sound4.com/Product
https://www.exploit-db.com/exploits/51259Exploit, Third Party Advisory
https://www.vulncheck.com/advisories/sound-linkandshare-transmitter-format-string-stack-buffer-overflowExploit, Third Party Advisory
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5744.phpThird Party Advisory
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5744.phpThird Party Advisory

Timeline

Published: Dec 22, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-53966?

How severe is CVE-2023-53966?

CVE-2023-53966 has a CVSS score of 9.3/10 (CRITICAL severity). The EPSS model estimates a 0.62% probability of exploitation in the next 30 days.

How do I fix CVE-2023-53966?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-53966?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST