VAR-202103-0438

Vulnerability from variot - Updated: 2026-03-07 23:52

Rockwell Automation Studio 5000 Logix Designer Versions 21 and later, and RSLogix 5000 Versions 16 through 20 use a key to verify Logix controllers are communicating with Rockwell Automation CompactLogix 1768, 1769, 5370, 5380, 5480: ControlLogix 5550, 5560, 5570, 5580; DriveLogix 5560, 5730, 1794-L34; Compact GuardLogix 5370, 5380; GuardLogix 5570, 5580; SoftLogix 5800. Rockwell Automation Studio 5000 Logix Designer Versions 21 and later and RSLogix 5000: Versions 16 through 20 are vulnerable because an unauthenticated attacker could bypass this verification mechanism and authenticate with Rockwell Automation CompactLogix 1768, 1769, 5370, 5380, 5480: ControlLogix 5550, 5560, 5570, 5580; DriveLogix 5560, 5730, 1794-L34; Compact GuardLogix 5370, 5380; GuardLogix 5570, 5580; SoftLogix 5800. plural Rockwell Automation Logix Insufficient authentication protection vulnerabilities exist in controller products

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{
  "affected_products": {
    "_id": null,
    "data": [
      {
        "_id": null,
        "model": "factorytalk services platform",
        "scope": "gte",
        "trust": 1.0,
        "vendor": "rockwellautomation",
        "version": "2.10"
      },
      {
        "_id": null,
        "model": "rslogix 5000",
        "scope": "lte",
        "trust": 1.0,
        "vendor": "rockwellautomation",
        "version": "20"
      },
      {
        "_id": null,
        "model": "rslogix 5000",
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        "vendor": "rockwellautomation",
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      },
      {
        "_id": null,
        "model": "studio 5000 logix designer",
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        "vendor": "rockwellautomation",
        "version": "21.0"
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      {
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        "model": "compactlogix",
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        "vendor": "rockwell automation",
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        "vendor": "rockwell automation",
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      {
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        "model": "studio 5000 logix designer",
        "scope": "eq",
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        "vendor": "rockwell automation",
        "version": "version  21  and later"
      }
    ],
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        "db": "JVNDB",
        "id": "JVNDB-2021-001119"
      },
      {
        "db": "NVD",
        "id": "CVE-2021-22681"
      }
    ]
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  "cve": "CVE-2021-22681",
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            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "author": "nvd@nist.gov",
            "availabilityImpact": "PARTIAL",
            "baseScore": 7.5,
            "confidentialityImpact": "PARTIAL",
            "exploitabilityScore": 10.0,
            "id": "CVE-2021-22681",
            "impactScore": 6.4,
            "integrityImpact": "PARTIAL",
            "severity": "HIGH",
            "trust": 1.1,
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
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            "attackVector": "NETWORK",
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            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "exploitabilityScore": 3.9,
            "id": "CVE-2021-22681",
            "impactScore": 5.9,
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "trust": 2.0,
            "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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          {
            "attackComplexity": "Low",
            "attackVector": "Network",
            "author": "IPA",
            "availabilityImpact": "High",
            "baseScore": 10,
            "baseSeverity": "Critical",
            "confidentialityImpact": "High",
            "exploitabilityScore": null,
            "id": "JVNDB-2021-001119",
            "impactScore": null,
            "integrityImpact": "High",
            "privilegesRequired": "None",
            "scope": "Changed",
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            "userInteraction": "None",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
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        "id": "CVE-2021-22681"
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        "db": "NVD",
        "id": "CVE-2021-22681"
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    ]
  },
  "description": {
    "_id": null,
    "data": "Rockwell Automation Studio 5000 Logix Designer Versions 21 and later, and RSLogix 5000 Versions 16 through 20 use a key to verify Logix controllers are communicating with Rockwell Automation CompactLogix 1768, 1769, 5370, 5380, 5480: ControlLogix 5550, 5560, 5570, 5580; DriveLogix 5560, 5730, 1794-L34; Compact GuardLogix 5370, 5380; GuardLogix 5570, 5580; SoftLogix 5800. Rockwell Automation Studio 5000 Logix Designer Versions 21 and later and RSLogix 5000: Versions 16 through 20 are vulnerable because an unauthenticated attacker could bypass this verification mechanism and authenticate with Rockwell Automation CompactLogix 1768, 1769, 5370, 5380, 5480: ControlLogix 5550, 5560, 5570, 5580; DriveLogix 5560, 5730, 1794-L34; Compact GuardLogix 5370, 5380; GuardLogix 5570, 5580; SoftLogix 5800. plural Rockwell Automation Logix Insufficient authentication protection vulnerabilities exist in controller products",
    "sources": [
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        "id": "CVE-2021-22681"
      },
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        "db": "JVNDB",
        "id": "JVNDB-2021-001119"
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    ]
  },
  "id": "VAR-202103-0438",
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    "data": true,
    "sources": [
      {
        "db": "VARIoT devices database",
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  "last_update_date": "2026-03-07T23:52:17.783000Z",
  "patch": {
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    "data": [
      {
        "title": "BF7490\u00a0( Login required )",
        "trust": 0.8,
        "url": "https://literature.rockwellautomation.com/idc/groups/literature/documents/rm/secure-rm001_-en-p.pdf"
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        "title": "Rockwell Automation RSLogix 500  and  Logix Designer Studio 5000 Security vulnerabilities",
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        "problemtype": "CWE-522",
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  "title": {
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    "data": "plural \u00a0Rockwell\u00a0Automation\u00a0Logix\u00a0 Insufficient authentication protection vulnerability in controller products",
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}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.