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CVE-2021-34193

Status: ModifiedHigh (7.5)—

Stack overflow vulnerability in OpenSC smart card middleware before 0.23 via crafted responses to APDUs.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Opensc Project — Opensc

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2021-34193",
  "cveTags": [],
  "metrics": {
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          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
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  "published": "2023-08-22T19:16:20.913",
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      "description": [
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          "lang": "en",
          "value": "CWE-787"
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    {
      "lang": "en",
      "value": "Stack overflow vulnerability in OpenSC smart card middleware before 0.23 via crafted responses to APDUs."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de desbordamiento de pila en el middleware de tarjetas inteligentes OpenSC anterior a 0.23 a través de respuestas a APDUs manipuladas."
    }
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  "lastModified": "2026-06-17T03:55:32.917",
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}