CVE-2023-53966

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.73% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 53.8% of scored records. A rank, not a probability.

NVD base score

9.3 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2025-12-22 21:35Z10 MO AGO

Last updated

2025-12-22 22:05Z10 MO AGO

Reserved

2025-12-19

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

Critical (CVSS 9.3)

CNA CVSS vector

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

Weaknesses

• CWE-134Use of Externally-Controlled Format StringBase

Data version

5.2

Document digest

078620b46a32e9aa5a0b15285d9a36ea68b678bb65e5ca1ff8a5aed91128ebbd

• www.exploit-db.comExploitDB-51259https://www.exploit-db.com/exploits/51259exploit
• web.archive.orgSOUND4 Official Product Homepagehttps://web.archive.org/web/20221207074555/https://www.sound4.com/product
• www.zeroscience.mkZero Science Lab Disclosure (ZSL-2022-5744)https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5744.phpthird-party-advisory
• www.vulncheck.comVulnCheck Advisory: SOUND4 LinkAndShare Transmitter 1.1.2 Format String Stack Buffer Overflowhttps://www.vulncheck.com/advisories/sound-linkandshare-transmitter-format-string-stack-buffer-overflowthird-party-advisory