CVE-2026-82943

Full vulnerability record from the local CVENow database.

Description

SOEM version 2.0.0 and earlier contains vulnerabilities where a malicious device can send messages that cause the master to read data from memory locations beyond the intended buffer. The software uses length values from device responses without validating them against actual buffer sizes. An attacker can exploit this to extract up to 64KB of data from the master's memory.

Severity

MEDIUM

CVSS score

6.5 (v3.1)

Vulnerability status

Awaiting Analysis

Source identifier

a6d3dc9e-0591-4a13-bce7-0f5b31ff6158

Published

2026-10-26 09:16:36.023000

Last modified

2026-10-26 15:16:44.417000

View original CVE JSON

{
  "id": "CVE-2026-82943",
  "sourceIdentifier": "a6d3dc9e-0591-4a13-bce7-0f5b31ff6158",
  "published": "2026-10-26T09:16:36.023",
  "lastModified": "2026-10-26T15:16:44.417",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "SOEM version 2.0.0 and earlier contains vulnerabilities where a malicious device can send messages that cause the master to read data from memory locations beyond the intended buffer. The software uses length values from device responses without validating them against actual buffer sizes. An attacker can exploit this to extract up to 64KB of data from the master's memory."
    }
  ],
  "affected": [
    {
      "source": "a6d3dc9e-0591-4a13-bce7-0f5b31ff6158",
      "affectedData": [
        {
          "vendor": "RT-Labs AB",
          "product": "SOEM",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "lessThan": "2.0.1",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "a6d3dc9e-0591-4a13-bce7-0f5b31ff6158",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "ADJACENT_NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-10-26T13:26:54.814319Z",
          "id": "CVE-2026-82943",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "a6d3dc9e-0591-4a13-bce7-0f5b31ff6158",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        },
        {
          "lang": "en",
          "value": "CWE-195"
        },
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://rt-labs.com/wp-content/uploads/2026/10/RRTL-260921-01.pdf",
      "source": "a6d3dc9e-0591-4a13-bce7-0f5b31ff6158"
    }
  ]
}