CVE-2026-103531

medium

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.

References

https://vuldb.com/vuln/412343/cti

https://vuldb.com/vuln/412343

https://vuldb.com/submit/956910

https://vuldb.com/cve/CVE-2026-103531

https://github.com/OpenSC/OpenSC/pull/3812

https://github.com/OpenSC/OpenSC/commit/ad730304052937c32b4eb489a06835ac6123632c

https://github.com/OpenSC/OpenSC/

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-90449

Details

Source: Mitre, NVD

Published: 2026-10-01

Updated: 2026-10-01

Risk Information

CVSS v2

Base Score: 6.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

Severity: Medium

CVSS v4

Base 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

Severity: Medium