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CVE-2018-5177

Status: ModifiedHigh (7.5)—

A vulnerability exists in XSLT during number formatting where a negative buffer size may be allocated in some instances, leading to a buffer overflow and crash if it occurs. This vulnerability affects Firefox < 60.

CVSS

Exploitation probability (EPSS)

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 (2)

Canonical — Ubuntu LinuxMozilla — Firefox

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2018-5177",
  "cveTags": [],
  "metrics": {
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": true,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
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          "confidentialityImpact": "NONE"
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  "published": "2018-06-11T21:29:16.123",
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  "weaknesses": [
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      "description": [
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          "value": "CWE-119"
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      "value": "A vulnerability exists in XSLT during number formatting where a negative buffer size may be allocated in some instances, leading to a buffer overflow and crash if it occurs. This vulnerability affects Firefox < 60."
    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad en XSLT durante el formateo de números en la que se puede asignar un tamaño de búfer negativo en algunos casos, lo que provoca un desbordamiento de búfer y un cierre inesperado si ocurre. Esta vulnerabilidad afecta a las versiones anteriores a la 60 de Firefox."
    }
  ],
  "lastModified": "2026-06-17T01:59:46.467",
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