CVE-2026-103531

MEDIUM 5.5

OpenSC card-setcos.c setcos_construct_fci_44 stack-based overflow

CVSS Score

5.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-121 CWE-119
Vendor	n/a
Product	opensc
Published	Oct 1, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

n/a / OpenSC

0.27.0 0.27.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

🔍 zzxzzb (VulDB User)