CVE WatchOct 6, 2026

CVE-2026-103531

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-se

CVSS

5.5

Medium

EPSS

0.2%

KEV

—

Exploit Today

0-100

Published: Oct 1, 2026 · Last modified: Oct 6, 2026 · CWE-119 · CWE-121

EPSS · 30d

0.2%EPSS · 30 days0.2%

2026-10-022026-10-21

Technical 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.

Official references

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