CVE-2026-103531 (GCVE-0-2026-103531)
Vulnerability from cvelistv5 – Published: 2026-10-01 00:45 – Updated: 2026-10-01 00:45 X_Open Source
VLAI
EPSS
VEX
Title
OpenSC card-setcos.c setcos_construct_fci_44 stack-based overflow
Summary
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.
Severity
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/412343 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/412343/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-103531 | third-party-advisory |
| https://vuldb.com/submit/956910 | third-party-advisory |
| https://github.com/OpenSC/OpenSC/pull/3812 | issue-trackingpatch |
| https://github.com/OpenSC/OpenSC/commit/ad7303040… | patch |
| https://github.com/OpenSC/OpenSC/ | product |
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:a:opensc:opensc:*:*:*:*:*:*:*:*"
],
"product": "OpenSC",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "0.27.0"
},
{
"status": "affected",
"version": "0.27.1"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "zzxzzb (VulDB User)"
}
],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"metrics": [
{
"cvssV4_0": {
"baseScore": 5.1,
"baseSeverity": "MEDIUM",
"vectorString": "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",
"version": "4.0"
}
},
{
"cvssV3_1": {
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"vectorString": "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",
"version": "3.1"
}
},
{
"cvssV3_0": {
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"vectorString": "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",
"version": "3.0"
}
},
{
"cvssV2_0": {
"baseScore": 6.5,
"vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P/E:ND/RL:OF/RC:C",
"version": "2.0"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-121",
"description": "Stack-based Buffer Overflow",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-119",
"description": "Memory Corruption",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-01T00:45:15.812Z",
"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"shortName": "VulDB"
},
"references": [
{
"name": "VDB-412343 | OpenSC card-setcos.c setcos_construct_fci_44 stack-based overflow",
"tags": [
"vdb-entry",
"technical-description"
],
"url": "https://vuldb.com/vuln/412343"
},
{
"name": "VDB-412343 | CTI Indicators (IOB, IOC, IOA)",
"tags": [
"signature",
"permissions-required"
],
"url": "https://vuldb.com/vuln/412343/cti"
},
{
"name": "CVE-2026-103531 | CVE Analysis and Report",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/cve/CVE-2026-103531"
},
{
"name": "Submit #956910 | OpenSC \u003e= 0.12.2 up to and including 0.27.1 (latest release, unfixed; fix approved in PR #3812, pending merge) Buffer Overflow (stack, CWE-121)",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/submit/956910"
},
{
"tags": [
"issue-tracking",
"patch"
],
"url": "https://github.com/OpenSC/OpenSC/pull/3812"
},
{
"tags": [
"patch"
],
"url": "https://github.com/OpenSC/OpenSC/commit/ad730304052937c32b4eb489a06835ac6123632c"
},
{
"tags": [
"product"
],
"url": "https://github.com/OpenSC/OpenSC/"
}
],
"tags": [
"x_open-source"
],
"timeline": [
{
"lang": "en",
"time": "2026-09-30T00:00:00.000Z",
"value": "Advisory disclosed"
},
{
"lang": "en",
"time": "2026-09-30T02:00:00.000Z",
"value": "VulDB entry created"
},
{
"lang": "en",
"time": "2026-09-30T21:11:57.000Z",
"value": "VulDB entry last update"
}
],
"title": "OpenSC card-setcos.c setcos_construct_fci_44 stack-based overflow",
"x_generator": [
"VulDB PVTS v202610"
]
}
},
"cveMetadata": {
"assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"assignerShortName": "VulDB",
"cveId": "CVE-2026-103531",
"datePublished": "2026-10-01T00:45:15.812Z",
"dateReserved": "2026-09-30T19:06:48.961Z",
"dateUpdated": "2026-10-01T00:45:15.812Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"cpes": [
"cpe:2.3:a:opensc:opensc:*:*:*:*:*:*:*:*"
],
"product": "OpenSC",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "0.27.0"
},
{
"status": "affected",
"version": "0.27.1"
}
]
}
],
"source": "cna@vuldb.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"id": "CVE-2026-103531",
"lastModified": "2026-10-01T02:12:10.020",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "PARTIAL",
"baseScore": 6.5,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.0,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "cna@vuldb.com",
"type": "Secondary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L",
"version": "3.1"
},
"exploitabilityScore": 2.1,
"impactScore": 3.4,
"source": "cna@vuldb.com",
"type": "Primary"
}
],
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 5.1,
"baseSeverity": "MEDIUM",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "PASSIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"version": "4.0",
"vulnAvailabilityImpact": "LOW",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "cna@vuldb.com",
"type": "Secondary"
}
]
},
"published": "2026-10-01T01:16:35.963",
"references": [
{
"source": "cna@vuldb.com",
"url": "https://github.com/OpenSC/OpenSC/"
},
{
"source": "cna@vuldb.com",
"url": "https://github.com/OpenSC/OpenSC/commit/ad730304052937c32b4eb489a06835ac6123632c"
},
{
"source": "cna@vuldb.com",
"url": "https://github.com/OpenSC/OpenSC/pull/3812"
},
{
"source": "cna@vuldb.com",
"url": "https://vuldb.com/cve/CVE-2026-103531"
},
{
"source": "cna@vuldb.com",
"url": "https://vuldb.com/submit/956910"
},
{
"source": "cna@vuldb.com",
"url": "https://vuldb.com/vuln/412343"
},
{
"source": "cna@vuldb.com",
"url": "https://vuldb.com/vuln/412343/cti"
}
],
"sourceIdentifier": "cna@vuldb.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-119"
},
{
"lang": "en",
"value": "CWE-121"
}
],
"source": "cna@vuldb.com",
"type": "Primary"
}
]
}
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…