Is CVE-2023-53966 in the CISA KEV catalog?

No. CVE-2023-53966 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-53966?

CVE-2023-53966 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2023-53966?

CVE-2023-53966 has an EPSS score of 0.62% (45th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2023-53966

CRITICAL

9.8

CVSS v3

NVD

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.

CWE-134

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.62%probability of exploitation in 30 days

45thpercentile

Moderate risk: more likely to be exploited than 45% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-12-31.