Memory Corruption via FMMU Configuration Table Overflow

{
  "id": "2d215ada14067a26b493293dfcedc235cbed5b2d83468fa0acebe07216fb5bb7",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-82945",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Memory Corruption via FMMU Configuration Table Overflow",
    "summary": "SOEM version 2.0.0 and earlier contains a vulnerability during device configuration where a malicious device can cause memory corruption. The software writes configuration data to a fixed-size array without checking if the array index exceeds its maximum size of EC_MAXFMMU entries. A device presenting more than EC_MAXFMMU configuration blocks can force writes beyond the array boundary, corrupting adjacent memory structures and potentially disrupting subsequent operations.",
    "evidence": "cve:CVE-2026-82945",
    "products": [
      {
        "name": {
          "value": "SOEM",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
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    "severity": "medium",
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      "id": "CVE-2026-82945",
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        "CVE-2026-82945"
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      "metrics": [
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          "format": "CVSS",
          "cvssV3_1": {
            "scope": "UNCHANGED",
            "version": "3.1",
            "baseScore": 6.5,
            "attackVector": "ADJACENT_NETWORK",
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "integrityImpact": "NONE",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "availabilityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "confidentialityImpact": "NONE"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "affected": [
        {
          "vendor": "RT-Labs AB",
          "product": "SOEM",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "2.0.1",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-26T14:35:19.284Z",
      "provider": "cve",
      "references": [
        "https://rt-labs.com/wp-content/uploads/2026/10/RRTL-260921-01.pdf"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-82945",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-26T13:25:37.512009Z"
                  }
                }
              }
            ],
            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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              "dateUpdated": "2026-10-26T14:35:19.284Z"
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        "cna": {
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          "shortName": "ENISA",
          "dateUpdated": "2026-10-26T08:51:32.194Z"
        }
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    "related_cves": [
      {
        "value": "CVE-2026-82945",
        "evidence": "/cveMetadata/cveId"
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    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 311583,
  "published_at": "2026-10-26T08:51:32.194+00:00"
}