A flaw has been found in OpenSC up to 0.27.1. The impacted element is the function setcos_construct_fci_44 of the file src/libopensc/card-setcos.c. Executing a manipulation of the argument type_attr can lead to stack-based buffer overflow. The attack can be launched remotely. This patch is called ad730304052937c32b4eb489a06835ac6123632c. It is best practice to apply a patch to resolve this issue.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction Required

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction Required

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
n/a OpenSC affected
Version Status Constraints
0.27.0 affected —
0.27.1 affected —

No data.

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Project Subscriptions

Vendors Products
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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/OpenSC/OpenSC/ cve-icon cve-icon
https://github.com/OpenSC/OpenSC/commit/ad730304052937c32b4eb489a06835ac6123632c cve-icon cve-icon
https://github.com/OpenSC/OpenSC/pull/3812 cve-icon cve-icon
https://vuldb.com/cve/CVE-2026-103531 cve-icon cve-icon
https://vuldb.com/submit/956910 cve-icon cve-icon
https://vuldb.com/vuln/412343 cve-icon cve-icon
https://vuldb.com/vuln/412343/cti cve-icon cve-icon
History

Thu, 01 Oct 2026 01:15:00 +0000

Type Values Removed Values Added
Description A flaw has been found in OpenSC up to 0.27.1. The impacted element is the function setcos_construct_fci_44 of the file src/libopensc/card-setcos.c. Executing a manipulation of the argument type_attr can lead to stack-based buffer overflow. The attack can be launched remotely. This patch is called ad730304052937c32b4eb489a06835ac6123632c. It is best practice to apply a patch to resolve this issue.
Title OpenSC card-setcos.c setcos_construct_fci_44 stack-based overflow
First Time appeared Opensc
Opensc opensc
Weaknesses CWE-119
CWE-121
CPEs cpe:2.3:a:opensc:opensc:*:*:*:*:*:*:*:*
Vendors & Products Opensc
Opensc opensc
References
Metrics cvssV2_0

{'score': 6.5, 'vector': 'AV:N/AC:L/Au:S/C:P/I:P/A:P/E:ND/RL:OF/RC:C'}

cvssV3_0

{'score': 5.5, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C'}

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-10-01T00:45:15.812Z

Reserved: 2026-09-30T19:06:48.961Z

Link: CVE-2026-103531

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-01T01:16:35.963

Modified: 2026-10-01T01:16:35.963

Link: CVE-2026-103531

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses