CVE-2025-59391

A memory disclosure vulnerability exists in libcoap's OSCORE configuration parser in libcoap before release-4.3.5-patches. An out-of-bounds read may occur when parsing certain configuration values, allowing an attacker to infer or read memory beyond string boundaries in the .rodata section. This could potentially lead to information disclosure or denial of service.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/obgm/libcoap/pull/1730	Issue Tracking Patch
https://github.com/obgm/libcoap/releases/tag/v4.3.5a	Release Notes

Configurations

Configuration 1 (hide)

cpe:2.3:a:libcoap:libcoap:*:*:*:*:*:*:*:*

History

19 Oct 2026, 13:10

Type	Values Removed	Values Added
Summary		(es) Existe una vulnerabilidad de revelación de memoria en el analizador de configuración OSCORE de libcoap antes de la versión release-4.3.5-patches. Puede producirse una lectura fuera de límites al analizar ciertos valores de configuración, permitiendo a un atacante inferir o leer memoria más allá de los límites de las cadenas en la sección .rodata. Esto podría conducir potencialmente a la revelación de información o a la denegación de servicio.

Information

Published : 2025-12-08 17:16

Updated : 2026-10-19 13:10

NVD link : CVE-2025-59391

Mitre link : CVE-2025-59391

CVE.ORG link : CVE-2025-59391

JSON object : View

Products Affected

libcoap

libcoap

CWE

CWE-125

Out-of-bounds Read

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