Cyber Resilience

CVE-2023-5139

MediumPublic PoC

Published: 26 October 2023

Published
26 October 2023
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 4.4 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
EPSS Score 0.0027 50.3th percentile
Risk Priority 9 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-5139 is a medium-severity Classic Buffer Overflow (CWE-120) vulnerability in Zephyrproject Zephyr. Its CVSS base score is 4.4 (Medium).

Operationally, ranked in the top 49.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

Potential buffer overflow vulnerability at the following location in the Zephyr STM32 Crypto driver

CWE(s)
CWE-120

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

zephyrproject
zephyr
≤ 3.4.0

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-27 Platform-independent Applications
addresses: CWE-120

Platform-independent managed code eliminates the need for unchecked native buffer copies that are the root cause of classic buffer overflows.

References