CVE-2025-51824

Medium

Published: 11 August 2025

Published

11 August 2025

Modified

14 August 2025

KEV Added

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Patch

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CVSS Score v3.1 6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N

EPSS Score 0.0020 41.4th percentile

Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-51824 is a medium-severity Classic Buffer Overflow (CWE-120) vulnerability in Libcsp Libcsp. Its CVSS base score is 6.5 (Medium).

Operationally, ranked at the 41.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

libcsp 2.0 is vulnerable to Buffer Overflow in the csp_usart_open() function at drivers/usart/zephyr.c.

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

libcsp

2.0

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.

addresses: CWE-120

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