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CVE-2018-11595

Status: ModifiedHigh (7.8)—
Severity7.8High · CVSS 3.0
Exploitation probability1.30 %higher than 70% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

Espruino before 1.99 allows attackers to cause a denial of service (application crash) and a potential Escalation of Privileges with a user crafted input file via a Buffer Overflow during syntax parsing, because strncat is misused.

CVSS

Base score
7.8
Version
3.0
Vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
1.30 %
Percentile among all scored CVEs
70
Score date
10/24/2026

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)

Espruino — Espruino

CWEs

References

Show 10 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2018-11595",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
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        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
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        }
      ]
    }
  ],
  "published": "2018-05-31T16:29:00.487",
  "references": [
    {
      "url": "https://github.com/espruino/Espruino/commit/0a7619875bf79877907205f6bee08465b89ff10b",
      "tags": [
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        "Vendor Advisory"
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      "tags": [
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      "tags": [
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      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/espruino/Espruino/files/2019220/test_4.txt",
      "tags": [
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      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/espruino/Espruino/issues/1425",
      "tags": [
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        "Vendor Advisory"
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      "source": "cve@mitre.org"
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    {
      "url": "https://github.com/espruino/Espruino/commit/0a7619875bf79877907205f6bee08465b89ff10b",
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    {
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      "tags": [
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    },
    {
      "url": "https://github.com/espruino/Espruino/files/2019220/test_4.txt",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/espruino/Espruino/issues/1425",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Espruino before 1.99 allows attackers to cause a denial of service (application crash) and a potential Escalation of Privileges with a user crafted input file via a Buffer Overflow during syntax parsing, because strncat is misused."
    },
    {
      "lang": "es",
      "value": "Espruino en versiones anteriores a la 1.99 permite que los atacantes provoquen una denegación de servicio (cierre inesperado de la aplicación) y, posiblemente, un escalado de privilegios con un archivo de entrada manipulado por el usuario mediante un desbordamiento de búfer durante el análisis sintáctico porque strncat se emplea incorrectamente."
    }
  ],
  "lastModified": "2026-06-17T01:36:14.250",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:espruino:espruino:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0AC819A2-4289-44FA-9EBB-12DC6DB5455F",
              "versionEndExcluding": "1.99"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}