FKIE_CVE-2026-2762

Vulnerability from fkie_nvd - Published: 2026-02-24 14:16 - Updated: 2026-02-25 17:37
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Integer overflow in the JavaScript: Standard Library component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
References
security@mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=2011649Issue Tracking, Permissions Required
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-13/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-15/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-16/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-17/Vendor Advisory
Impacted products
Vendor Product Version
mozilla firefox *
mozilla firefox *
mozilla thunderbird *
mozilla thunderbird *
To clipboard 

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      "nodes": [
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          "cpeMatch": [
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              "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*",
              "matchCriteriaId": "7DA5BF3D-3278-43DD-9DD4-C78D7A2C1883",
              "versionEndExcluding": "140.8.0",
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          "operator": "OR"
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Integer overflow in the JavaScript: Standard Library component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
    }
  ],
  "id": "CVE-2026-2762",
  "lastModified": "2026-02-25T17:37:47.573",
  "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"
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        "impactScore": 5.9,
        "source": "nvd@nist.gov",
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  "published": "2026-02-24T14:16:24.480",
  "references": [
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      "tags": [
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    },
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "value": "CWE-190"
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      "source": "nvd@nist.gov",
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