FKIE_CVE-2025-70085

Vulnerability from fkie_nvd - Published: 2026-02-11 18:16 - Updated: 2026-02-17 15:02
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
An issue was discovered in OpenSatKit 2.2.1. The EventErrStr buffer has a fixed size of 256 bytes. The code uses sprintf to format two filenames (Source1Filename and the string returned by FileUtil_FileStateStr) into this buffer without any length checking and without using bounded format specifiers such as %.*s. If the filename length approaches OS_MAX_PATH_LEN (commonly 64-256 bytes), the combined formatted string together with constant text can exceed 256 bytes, resulting in a stack buffer overflow. Such unsafe sprintf calls are scattered across multiple functions in file.c, including FILE_ConcatenateCmd() and ConcatenateFiles(), all of which fail to validate the output length.
References
cve@mitre.orghttps://gist.github.com/jonafk555Third Party Advisory
cve@mitre.orghttps://github.com/OpenSatKit/OpenSatKitProduct
cve@mitre.orghttps://github.com/OpenSatKit/OpenSatKit/releases/tag/v2.2.1Release Notes
cve@mitre.orghttps://raw.githubusercontent.com/OpenSatKit/OpenSatKit/master/cfs/apps/filemgr/fsw/src/file.cThird Party Advisory
Impacted products
Vendor Product Version
opensatkit opensatkit 2.2.1
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    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:opensatkit:opensatkit:2.2.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "05D04EF6-40EC-44CC-BF6A-05BD079D06A8",
              "vulnerable": true
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in OpenSatKit 2.2.1. The EventErrStr buffer has a fixed size of 256 bytes. The code uses sprintf to format two filenames (Source1Filename and the string returned by FileUtil_FileStateStr) into this buffer without any length checking and without using bounded format specifiers such as %.*s. If the filename length approaches OS_MAX_PATH_LEN (commonly 64-256 bytes), the combined formatted string together with constant text can exceed 256 bytes, resulting in a stack buffer overflow. Such unsafe sprintf calls are scattered across multiple functions in file.c, including FILE_ConcatenateCmd() and ConcatenateFiles(), all of which fail to validate the output length."
    }
  ],
  "id": "CVE-2025-70085",
  "lastModified": "2026-02-17T15:02:22.943",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-02-11T18:16:06.600",
  "references": [
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      "source": "cve@mitre.org",
      "tags": [
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      "url": "https://gist.github.com/jonafk555"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      "url": "https://github.com/OpenSatKit/OpenSatKit"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Release Notes"
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      "url": "https://github.com/OpenSatKit/OpenSatKit/releases/tag/v2.2.1"
    },
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      "source": "cve@mitre.org",
      "tags": [
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      "url": "https://raw.githubusercontent.com/OpenSatKit/OpenSatKit/master/cfs/apps/filemgr/fsw/src/file.c"
    }
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-121"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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