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    2 vulnerabilities by amartin755

    CVE-2026-111137 (GCVE-0-2026-111137)

    Vulnerability from nvd – Published: 2026-10-15 18:57 – Updated: 2026-10-15 18:57
    VLAI
    Title
    libsmi through 0.5.0 Out-of-Bounds Write via smiValueAsString OCTET STRING DEFVAL
    Summary
    libsmi through 0.5.0 contains an out-of-bounds write vulnerability in smiValueAsString() in lib/smi.c that allows attackers to overflow a fixed 1024-byte static buffer through hex rendering of OCTET STRING values. Attackers can supply a crafted MIB with an OCTET STRING DEFVAL of 512 or more octets and a leading 0x00 byte to corrupt adjacent library globals and crash smidump or other consumers.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
    6.1 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
    CWE
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 6249 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    amartin755 libsmi Affected: 0 , ≤ 0.5.0 (custom)
    		Create a notification for this product.
    Date Public
    2026-10-15 00:00
    Credits
    HaiND from the Post and Telecommunication Institute of Technology
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://github.com/amartin755/libsmi",
          "defaultStatus": "unaffected",
          "product": "libsmi",
          "repo": "https://github.com/amartin755/libsmi",
          "vendor": "amartin755",
          "versions": [
            {
              "lessThanOrEqual": "0.5.0",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "HaiND from the Post and Telecommunication Institute of Technology"
        }
      ],
      "datePublic": "2026-10-15T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "libsmi through 0.5.0 contains an out-of-bounds write vulnerability in smiValueAsString() in lib/smi.c that allows attackers to overflow a fixed 1024-byte static buffer through hex rendering of OCTET STRING values. Attackers can supply a crafted MIB with an OCTET STRING DEFVAL of 512 or more octets and a leading 0x00 byte to corrupt adjacent library globals and crash smidump or other consumers."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "LOW"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
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            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
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      ],
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          "descriptions": [
            {
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              "description": "Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-15T18:57:30.581Z",
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      },
      "references": [
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          ],
          "url": "https://hackmd.io/@haind-pwn/libsmi-smivalueasstring-octetstring-defval-oob-write"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/amartin755/libsmi/blob/c58307210fe995ec419db976eb234aebc71a9216/lib/smi.c#L479-L566"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/amartin755/libsmi"
        },
        {
          "name": "VulnCheck Advisory: libsmi through 0.5.0 Out-of-Bounds Write via smiValueAsString OCTET STRING DEFVAL",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/libsmi-through-0.5.0-out-of-bounds-write-via-smivalueasstring-octet-string-defval"
        }
      ],
      "title": "libsmi through 0.5.0 Out-of-Bounds Write via smiValueAsString OCTET STRING DEFVAL",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-111137",
    "datePublished": "2026-10-15T18:57:30.581Z",
    "dateReserved": "2026-10-15T17:03:55.430Z",
    "dateUpdated": "2026-10-15T18:57:30.581Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
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    CVE-2026-111137 (GCVE-0-2026-111137)

    Vulnerability from cvelistv5 – Published: 2026-10-15 18:57 – Updated: 2026-10-15 18:57
    VLAI
    Title
    libsmi through 0.5.0 Out-of-Bounds Write via smiValueAsString OCTET STRING DEFVAL
    Summary
    libsmi through 0.5.0 contains an out-of-bounds write vulnerability in smiValueAsString() in lib/smi.c that allows attackers to overflow a fixed 1024-byte static buffer through hex rendering of OCTET STRING values. Attackers can supply a crafted MIB with an OCTET STRING DEFVAL of 512 or more octets and a leading 0x00 byte to corrupt adjacent library globals and crash smidump or other consumers.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
    6.1 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
    CWE
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 6249 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    amartin755 libsmi Affected: 0 , ≤ 0.5.0 (custom)
    		Create a notification for this product.
    Date Public
    2026-10-15 00:00
    Credits
    HaiND from the Post and Telecommunication Institute of Technology
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://github.com/amartin755/libsmi",
          "defaultStatus": "unaffected",
          "product": "libsmi",
          "repo": "https://github.com/amartin755/libsmi",
          "vendor": "amartin755",
          "versions": [
            {
              "lessThanOrEqual": "0.5.0",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "HaiND from the Post and Telecommunication Institute of Technology"
        }
      ],
      "datePublic": "2026-10-15T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "libsmi through 0.5.0 contains an out-of-bounds write vulnerability in smiValueAsString() in lib/smi.c that allows attackers to overflow a fixed 1024-byte static buffer through hex rendering of OCTET STRING values. Attackers can supply a crafted MIB with an OCTET STRING DEFVAL of 512 or more octets and a leading 0x00 byte to corrupt adjacent library globals and crash smidump or other consumers."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "LOW"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-15T18:57:30.581Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "tags": [
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          ],
          "url": "https://hackmd.io/@haind-pwn/libsmi-smivalueasstring-octetstring-defval-oob-write"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/amartin755/libsmi/blob/c58307210fe995ec419db976eb234aebc71a9216/lib/smi.c#L479-L566"
        },
        {
          "tags": [
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          ],
          "url": "https://github.com/amartin755/libsmi"
        },
        {
          "name": "VulnCheck Advisory: libsmi through 0.5.0 Out-of-Bounds Write via smiValueAsString OCTET STRING DEFVAL",
          "tags": [
            "third-party-advisory"
          ],
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      ],
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    "dateReserved": "2026-10-15T17:03:55.430Z",
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