FKIE_CVE-2021-22681
Vulnerability from fkie_nvd - Published: 2021-03-03 18:15 - Updated: 2026-06-17 03:37
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/
Summary
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.
References
| URL | Tags | ||
|---|---|---|---|
| ics-cert@hq.dhs.gov | https://us-cert.cisa.gov/ics/advisories/icsa-21-056-03 | Third Party Advisory, US Government Resource | |
| af854a3a-2127-422b-91ae-364da2661108 | https://us-cert.cisa.gov/ics/advisories/icsa-21-056-03 | Third Party Advisory, US Government Resource | |
| 134c704f-9b21-4f2e-91b3-4a467353bcc0 | https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22681 | US Government Resource |
Impacted products
{
"affected": [
{
"affectedData": [
{
"product": "Rockwell Automation Studio 5000 Logix Designer, RSLogix 5000, Logix Controllers",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "RSLogix 5000 Versions 16 through 20"
},
{
"status": "affected",
"version": "Studio 5000 Logix Designer: Versions 21 and later"
},
{
"status": "affected",
"version": "CompactLogix 1768, 1769, 5370, 5380, 5480"
},
{
"status": "affected",
"version": "ControlLogix 5550, 5560, 5570, 5580"
},
{
"status": "affected",
"version": "DriveLogix 5560, 5730, 1794-L34"
},
{
"status": "affected",
"version": "Compact GuardLogix 5370, 5380"
},
{
"status": "affected",
"version": "GuardLogix 5570, 5580"
},
{
"status": "affected",
"version": "SoftLogix 5800"
}
]
}
],
"source": "ics-cert@hq.dhs.gov"
}
],
"cisaActionDue": "2026-03-26",
"cisaExploitAdd": "2026-03-05",
"cisaRequiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
"cisaVulnerabilityName": "Rockwell Multiple Products Insufficient Protected Credentials Vulnerability",
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:rockwellautomation:factorytalk_services_platform:*:*:*:*:*:*:*:*",
"matchCriteriaId": "6755FCF6-4A0C-478A-AEFF-54E35C45149D",
"versionStartIncluding": "2.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rockwellautomation:rslogix_5000:*:*:*:*:*:*:*:*",
"matchCriteriaId": "04C30129-3F03-4486-B181-EBDE29751372",
"versionEndIncluding": "20",
"versionStartIncluding": "16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rockwellautomation:studio_5000_logix_designer:*:*:*:*:*:*:*:*",
"matchCriteriaId": "9C840463-A11F-43A0-AA45-1AC810713AB6",
"versionStartIncluding": "21.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:rockwellautomation:compact_guardlogix_5370:-:*:*:*:*:*:*:*",
"matchCriteriaId": "6F951670-AF4D-4429-8BC1-79BDEF83B2C3",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:rockwellautomation:compact_guardlogix_5380:-:*:*:*:*:*:*:*",
"matchCriteriaId": "62414E65-73C7-4172-B7BF-F40A66AFBB90",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:rockwellautomation:compactlogix_1768:-:*:*:*:*:*:*:*",
"matchCriteriaId": "2E5F100A-C8A3-49F2-B1D2-411432472B6B",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:rockwellautomation:compactlogix_1769:-:*:*:*:*:*:*:*",
"matchCriteriaId": "F8A690BC-4D7C-4B83-A9F6-F860445028A2",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:rockwellautomation:compactlogix_5370:-:*:*:*:*:*:*:*",
"matchCriteriaId": "E12ADAE3-97B1-48BC-BE69-ED75667C1886",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:rockwellautomation:compactlogix_5380:-:*:*:*:*:*:*:*",
"matchCriteriaId": "EDD040ED-B44C-47D0-B4D4-729C378C4F68",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:rockwellautomation:compactlogix_5480:-:*:*:*:*:*:*:*",
"matchCriteriaId": "80F4F5BE-07DF-402A-BF98-34FBA6A11968",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:rockwellautomation:controllogix_5550:-:*:*:*:*:*:*:*",
"matchCriteriaId": "13EE2216-F25F-44AB-A167-4EEA153C8F8D",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:rockwellautomation:controllogix_5560:-:*:*:*:*:*:*:*",
"matchCriteriaId": "EA25FF8D-51C5-4928-9B90-E4BD1476F50B",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:rockwellautomation:controllogix_5570:-:*:*:*:*:*:*:*",
"matchCriteriaId": "482E2CD6-D484-486C-92F4-18432D107E30",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:rockwellautomation:controllogix_5580:-:*:*:*:*:*:*:*",
"matchCriteriaId": "51BB883B-B863-4D57-B1C0-FC7B3EBD1EA0",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:rockwellautomation:drivelogix_1794-l34:-:*:*:*:*:*:*:*",
"matchCriteriaId": "4A75A0FD-C337-4264-B1E4-96701851D6FA",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:rockwellautomation:drivelogix_5560:-:*:*:*:*:*:*:*",
"matchCriteriaId": "DFDAAA77-6964-44FC-9FFB-ECDF71665965",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:rockwellautomation:drivelogix_5730:-:*:*:*:*:*:*:*",
"matchCriteriaId": "03E185C3-17CA-4E3F-863B-9F906C5C59EA",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:rockwellautomation:guardlogix_5570:-:*:*:*:*:*:*:*",
"matchCriteriaId": "321AE938-192A-4342-8608-ADC81F0B6582",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:rockwellautomation:guardlogix_5580:-:*:*:*:*:*:*:*",
"matchCriteriaId": "006B7683-9FDF-4748-BA28-2EA22613E092",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:rockwellautomation:softlogix_5800:-:*:*:*:*:*:*:*",
"matchCriteriaId": "BDAB7B6D-CCAC-460B-8A88-3397A2397078",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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."
},
{
"lang": "es",
"value": "Rockwell Automation Studio 5000 Logix Designer versiones 21 y posteriores, y RSLogix 5000 versiones 16 hasta 20, usan una clave para verificar que los controladores Logix se est\u00e9n comunicando con Rockwell Automation CompactLogix 1768, 1769, 5370, 5380, 5480: ControlLogix 5550, 5560, 5570, 5580;\u0026#xa0;DriveLogix 5560, 5730, 1794-L34;\u0026#xa0;Compact GuardLogix 5370, 5380;\u0026#xa0;GuardLogix 5570, 5580;\u0026#xa0;SoftLogix 5800. Rockwell Automation Studio 5000 Logix Designer versiones 21 y posteriores y RSLogix 5000: Versiones 16 hasta 20, son vulnerables porque un atacante no autenticado podr\u00eda pasar por alto este mecanismo de comprobaci\u00f3n y autenticarse con Rockwell Automation CompactLogix 1768, 1769, 5370, 5380, 5480: ControlLogix 5550 , 5560, 5570, 5580;\u0026#xa0;DriveLogix 5560, 5730, 1794-L34;\u0026#xa0;Compact GuardLogix 5370, 5380;\u0026#xa0;GuardLogix 5570, 5580;\u0026#xa0;SoftLogix 5800"
}
],
"id": "CVE-2021-22681",
"lastModified": "2026-06-17T03:37:34.183",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 7.5,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"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"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"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"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2021-22681",
"options": [
{
"exploitation": "active"
},
{
"automatable": "yes"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-05T00:00:00+00:00",
"version": "2.0.3"
}
}
]
},
"published": "2021-03-03T18:15:14.643",
"references": [
{
"source": "ics-cert@hq.dhs.gov",
"tags": [
"Third Party Advisory",
"US Government Resource"
],
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-056-03"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory",
"US Government Resource"
],
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-056-03"
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"tags": [
"US Government Resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22681"
}
],
"sourceIdentifier": "ics-cert@hq.dhs.gov",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-522"
}
],
"source": "ics-cert@hq.dhs.gov",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-522"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- 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.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…