FKIE_CVE-2026-5448

Vulnerability from fkie_nvd - Published: 2026-04-10 00:16 - Updated: 2026-04-29 13:56
Severity
4.3 (Medium) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Summary
X.509 date buffer overflow in wolfSSL_X509_notAfter / wolfSSL_X509_notBefore. A buffer overflow may occur when parsing date fields from a crafted X.509 certificate via the compatibility layer API. This is only triggered when calling these two APIs directly from an application, and does not affect TLS or certificate verify operations in wolfSSL.
References
facts@wolfssl.comhttps://github.com/wolfSSL/wolfssl/pull/10071Issue Tracking, Patch
Impacted products
Vendor Product Version
wolfssl wolfssl *
To clipboard 

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              "criteria": "cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "261C41E4-7F04-4C98-AD63-110136730EE9",
              "versionEndExcluding": "5.9.1",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "X.509 date buffer overflow in wolfSSL_X509_notAfter / wolfSSL_X509_notBefore. A buffer overflow may occur when parsing date fields from a crafted X.509 certificate via the compatibility layer API. This is only triggered when calling these two APIs directly from an application, and does not affect TLS or certificate verify operations in wolfSSL."
    }
  ],
  "id": "CVE-2026-5448",
  "lastModified": "2026-04-29T13:56:59.573",
  "metrics": {
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          "attackVector": "ADJACENT_NETWORK",
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          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
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        "source": "nvd@nist.gov",
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          "baseSeverity": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
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          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
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          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
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          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
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          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "GREEN",
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          "subConfidentialityImpact": "NONE",
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          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/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:Green",
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  "published": "2026-04-10T00:16:35.890",
  "references": [
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      "tags": [
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  "vulnStatus": "Analyzed",
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          "lang": "en",
          "value": "CWE-122"
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      "source": "facts@wolfssl.com",
      "type": "Secondary"
    }
  ]
}


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