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

MITRE NVD CVE.ORG Print: PDF PDF

Summary

CVECVE-2025-66215
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-30 18:16:18 UTC
Updated2026-04-01 17:28:49 UTC
DescriptionOpenSC 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.

Risk And Classification

Primary CVSS: v3.1 6.8 MEDIUM from [email protected]

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.000190000 probability, percentile 0.050880000 (date 2026-04-01)

Problem Types: CWE-121 | CWE-121 CWE-121: Stack-based Buffer Overflow

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary6.8MEDIUMCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Secondary3.8LOWCVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
3.1CNADECLARED3.8LOWCVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

CVSS v3.1 Breakdown

Attack Vector
Physical
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Opensc Project Opensc All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA OpenSC OpenSC affected < 0.27.0 Not specified

References

ReferenceSourceLinkTags
github.com/OpenSC/OpenSC/pull/3436 [email protected] github.com Issue Tracking, Patch
github.com/OpenSC/OpenSC/commit/efd1d479832141bcf705c2f47655ada4d5f92f5d [email protected] github.com Patch
github.com/OpenSC/OpenSC/security/advisories/GHSA-q5fc-cw56-hwp2 [email protected] github.com Patch, Vendor Advisory
github.com/OpenSC/OpenSC/wiki/CVE-2025-66215 [email protected] github.com Vendor Advisory
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