CVE-2025-66215

OpenSC: Stack-buffer-overflow WRITE in card-oberthur

Published: Mar 30, 2026Updated: Apr 1, 2026 Sources: CVE List NVDCWE-121

3.8LOW

Description

OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, an attacker with physical access to the computer at the time user or administrator uses a token can cause a stack-buffer-overflow WRITE in card-oberthur. The attack requires crafted USB device or smart card that would present the system with specially crafted responses to the APDUs. This issue has been patched in version 0.27.0.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:PAttack Vector

Physical

AC:HAttack Complexity

High

PR:NPrivileges Required

None

UI:RUser Interaction

Required

Scope

S:UScope

Unchanged

Impact

C:LConfidentiality

Low

I:LIntegrity

Low

A:LAvailability

Low

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Weaknesses

CWE-121

Affected Products

OpenSC

oss-project

OpenSCLibrary

Security Products / pki-crypto

opensc project

oss-projectaka opensc

openscLibrary

OSS Libraries / generic-library

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Privilege Escalation

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References

https://github.com/OpenSC/OpenSC/security/advisories/GHSA-q5fc-cw56-hwp2

github.com

https://github.com/OpenSC/OpenSC/pull/3436

github.com

https://github.com/OpenSC/OpenSC/commit/efd1d479832141bcf705c2f47655ada4d5f92f5d

github.com

and 1 more references View all →

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