CVE-2025-66037

OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, feeding a crafted input to the fuzz_pkcs15_reader harness causes OpenSC to perform an out-of-bounds heap read in the X.509/SPKI handling path. Specifically, sc_pkcs15_pubkey_from_spki_fields() allocates a zero-length buffer and then reads one byte past the end of that allocation. This issue has been patched in version 0.27.0.

CVSS v3 3.9 LOW

3.9^/10

CVSS v3 : LOW

Vector :

Exploitability : 0.5 / Impact : 3.4

Attack Vector PHYSICAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/OpenSC/OpenSC/security/advisories/GHSA-m58q-rmjm-mmfx	Exploit Vendor Advisory
https://github.com/OpenSC/OpenSC/wiki/CVE-2025-66037	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:opensc_project:opensc:*:*:*:*:*:*:*:*

History

01 Apr 2026, 17:59

Type	Values Removed	Values Added
First Time		Opensc Project opensc Opensc Project
CPE		cpe:2.3:a:opensc_project:opensc::::::::
References	~~() https://github.com/OpenSC/OpenSC/security/advisories/GHSA-m58q-rmjm-mmfx -~~	() https://github.com/OpenSC/OpenSC/security/advisories/GHSA-m58q-rmjm-mmfx - Exploit, Vendor Advisory
References	~~() https://github.com/OpenSC/OpenSC/wiki/CVE-2025-66037 -~~	() https://github.com/OpenSC/OpenSC/wiki/CVE-2025-66037 - Vendor Advisory

01 Apr 2026, 14:24

Type	Values Removed	Values Added
Summary		(es) OpenSC es un conjunto de herramientas y middleware de código abierto para tarjetas inteligentes. Antes de la versión 0.27.0, al introducir una entrada manipulada en el arnés fuzz_pkcs15_reader, OpenSC realiza una lectura de pila fuera de límites en la ruta de manejo de X.509/SPKI. Específicamente, sc_pkcs15_pubkey_from_spki_fields() asigna un búfer de longitud cero y luego lee un byte más allá del final de esa asignación. Este problema ha sido parcheado en la versión 0.27.0.

30 Mar 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-30 18:16

Updated : 2026-04-01 17:59

NVD link : CVE-2025-66037

Mitre link : CVE-2025-66037

CVE.ORG link : CVE-2025-66037

JSON object : View

Products Affected

opensc_project

opensc

CWE

CWE-125

Out-of-bounds Read

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