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CVE-2026-103531

OpenSC card-setcos.c setcos_construct_fci_44 stack-based overflow

CVSS 4.0 5.1 MEDIUMCVSS 3.1 5.5 MEDIUMCVSS 3.0 5.5 MEDIUMCVSS 2.0 6.5 Check source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-103531

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-103531

Published

OpenSC

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "n/a",
                    "product": "OpenSC",
                    "versions": [
                        {
                            "version": "0.27.0",
                            "status": "affected"
                        },
                        {
                            "version": "0.27.1",
                            "status": "affected"
                        }
                    ],
                    "cpes": [
                        "cpe:2.3:a:opensc:opensc:*:*:*:*:*:*:*:*"
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON