FKIE_CVE-2025-66037

Vulnerability from fkie_nvd - Published: 2026-03-30 18:16 - Updated: 2026-04-01 17:59
Severity ?
3.9 (Low) - CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
6.8 (Medium) - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, feeding a crafted input to the fuzz_pkcs15_reader harness causes OpenSC to perform an out-of-bounds heap read in the X.509/SPKI handling path. Specifically, sc_pkcs15_pubkey_from_spki_fields() allocates a zero-length buffer and then reads one byte past the end of that allocation. This issue has been patched in version 0.27.0.
References
security-advisories@github.comhttps://github.com/OpenSC/OpenSC/security/advisories/GHSA-m58q-rmjm-mmfxExploit, Vendor Advisory
security-advisories@github.comhttps://github.com/OpenSC/OpenSC/wiki/CVE-2025-66037Vendor Advisory
Impacted products
Vendor Product Version
opensc_project opensc *
To clipboard 

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              "criteria": "cpe:2.3:a:opensc_project:opensc:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D890677F-5379-4587-B8E7-D38B02AD525A",
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      "value": "OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, feeding a crafted input to the fuzz_pkcs15_reader harness causes OpenSC to perform an out-of-bounds heap read in the X.509/SPKI handling path. Specifically, sc_pkcs15_pubkey_from_spki_fields() allocates a zero-length buffer and then reads one byte past the end of that allocation. This issue has been patched in version 0.27.0."
    },
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      "lang": "es",
      "value": "OpenSC es un conjunto de herramientas y middleware de c\u00f3digo abierto para tarjetas inteligentes. Antes de la versi\u00f3n 0.27.0, al introducir una entrada manipulada en el arn\u00e9s fuzz_pkcs15_reader, OpenSC realiza una lectura de pila fuera de l\u00edmites en la ruta de manejo de X.509/SPKI. Espec\u00edficamente, sc_pkcs15_pubkey_from_spki_fields() asigna un b\u00fafer de longitud cero y luego lee un byte m\u00e1s all\u00e1 del final de esa asignaci\u00f3n. Este problema ha sido parcheado en la versi\u00f3n 0.27.0."
    }
  ],
  "id": "CVE-2025-66037",
  "lastModified": "2026-04-01T17:59:35.773",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "PHYSICAL",
          "availabilityImpact": "LOW",
          "baseScore": 3.9,
          "baseSeverity": "LOW",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.1"
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        "type": "Secondary"
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          "attackVector": "PHYSICAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.8,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
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        "exploitabilityScore": 0.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  },
  "published": "2026-03-30T18:16:18.007",
  "references": [
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      "source": "security-advisories@github.com",
      "tags": [
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      "url": "https://github.com/OpenSC/OpenSC/security/advisories/GHSA-m58q-rmjm-mmfx"
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      "tags": [
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  "vulnStatus": "Analyzed",
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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