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.
Published: 2026-10-01
Score: 5.1 Medium
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

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Tracking

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Advisories

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History

Tue, 06 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 02 Oct 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-787
References
Metrics threat_severity

None

threat_severity

Moderate


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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-10-05T23:57:51.416Z

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

Link: CVE-2026-103531

cve-icon Vulnrichment

Updated: 2026-10-05T23:57:46.585Z

cve-icon NVD

Status : Deferred

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

Modified: 2026-10-06T01:16:33.190

Link: CVE-2026-103531

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-01T00:45:15Z

Links: CVE-2026-103531 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-02T02:30:18Z

Weaknesses
  • CWE-119

    Improper Restriction of Operations within the Bounds of a Memory Buffer

  • CWE-121

    Stack-based Buffer Overflow

  • CWE-787

    Out-of-bounds Write