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CVE-2025-10537

Full vulnerability record from the local CVENow database.

Description

Memory safety bugs present in Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3.

Severity
HIGH
CVSS score
8.8 (v3.1)
Vulnerability status
Modified
Source identifier
Published
2025-09-16 13:15:49.433000
Last modified
2026-10-23 22:10:00.160000
View original CVE JSON
{
  "id": "CVE-2025-10537",
  "sourceIdentifier": "[email protected]",
  "published": "2025-09-16T13:15:49.433",
  "lastModified": "2026-10-23T22:10:00.160",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Memory safety bugs present in Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3."
    },
    {
      "lang": "es",
      "value": "Errores de seguridad de memoria presentes en Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 y Thunderbird 142. Algunos de estos errores mostraron evidencia de corrupción de memoria y presumimos que con suficiente esfuerzo algunos de estos podrían haber sido explotados para ejecutar código arbitrario. Esta vulnerabilidad afecta a Firefox < 143, Firefox ESR anterior a 140.3, Thunderbird < 143 y Thunderbird anterior a 140.3."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Mozilla",
          "product": "Firefox",
          "versions": [
            {
              "version": "140.3",
              "lessThanOrEqual": "140.*",
              "versionType": "rpm",
              "status": "unaffected"
            },
            {
              "version": "143",
              "lessThanOrEqual": "*",
              "versionType": "rpm",
              "status": "unaffected"
            }
          ]
        },
        {
          "vendor": "Mozilla",
          "product": "Thunderbird",
          "versions": [
            {
              "version": "140.3",
              "lessThanOrEqual": "140.*",
              "versionType": "rpm",
              "status": "unaffected"
            },
            {
              "version": "143",
              "lessThanOrEqual": "*",
              "versionType": "rpm",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2025-09-17T03:55:49.986935Z",
          "id": "CVE-2025-10537",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*",
              "versionEndExcluding": "140.3.0",
              "matchCriteriaId": "277CA9C0-BD77-46D8-8191-F54598F7F47B"
            },
            {
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              "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*",
              "versionEndExcluding": "143.0",
              "matchCriteriaId": "6071B71C-B967-45B9-8CA4-1CB0A9E24D1A"
            },
            {
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              "criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*",
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            {
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              "matchCriteriaId": "38BD0000-9FB7-4D1B-A8D1-C23F9E325D28"
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  ],
  "references": [
    {
      "url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=1938220%2C1980730%2C1981280%2C1981283%2C1984505%2C1985067",
      "source": "[email protected]",
      "tags": [
        "Issue Tracking"
      ]
    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2025-73/",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
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    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2025-75/",
      "source": "[email protected]",
      "tags": [
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    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2025-77/",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
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    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2025-78/",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2025/09/msg00020.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2025/09/msg00026.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ]
}