FKIE_CVE-2021-38487
Vulnerability from fkie_nvd - Published: 2022-05-05 17:15 - Updated: 2026-06-17 04:02
Severity
8.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
9.1 (Critical) - CVSS:3.1/
Summary
RTI Connext Professional versions 4.1 to 6.1.0, and Connext Micro versions 2.4 and later are vulnerable when an attacker sends a specially crafted packet to flood target devices with unwanted traffic. This may result in a denial-of-service condition and information exposure.
References
| URL | Tags | ||
|---|---|---|---|
| 3f572a00-62e2-4423-959a-7ea25eff1638 | https://support.rti.com/s/login/?ec=302&startURL=%2Fs%2F | Permissions Required, Vendor Advisory | |
| 3f572a00-62e2-4423-959a-7ea25eff1638 | https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02 | Third Party Advisory, US Government Resource | |
| 3f572a00-62e2-4423-959a-7ea25eff1638 | https://www.rti.com/vulnerabilities/#cve-2021-38487 | ||
| af854a3a-2127-422b-91ae-364da2661108 | https://support.rti.com/s/login/?ec=302&startURL=%2Fs%2F | Permissions Required, Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02 | Third Party Advisory, US Government Resource |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| rti | connext_dds_micro | * | |
| rti | connext_professional | * | |
| rti | connext_secure | * |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Connext Professional",
"vendor": "RTI",
"versions": [
{
"lessThan": "6.1.0",
"status": "affected",
"version": "4.1",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Connext Micro",
"vendor": "RTI",
"versions": [
{
"lessThan": "4.0.*",
"status": "affected",
"version": "4.0.0",
"versionType": "custom"
},
{
"lessThan": "3.0.*",
"status": "affected",
"version": "3.0.0",
"versionType": "custom"
},
{
"lessThan": "2.4.*",
"status": "affected",
"version": "2.4.0",
"versionType": "custom"
}
]
}
],
"source": "3f572a00-62e2-4423-959a-7ea25eff1638"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:rti:connext_dds_micro:*:*:*:*:*:*:*:*",
"matchCriteriaId": "EFFBCF6A-4512-40EF-9FDF-1462FDE3046A",
"versionStartIncluding": "2.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rti:connext_professional:*:*:*:*:*:*:*:*",
"matchCriteriaId": "AA8B526B-9A03-4C47-B76C-A50F239AA538",
"versionEndExcluding": "6.1.0",
"versionStartIncluding": "4.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rti:connext_secure:*:*:*:*:*:*:*:*",
"matchCriteriaId": "FFD081C5-E43F-4F6A-93F8-1215A075C474",
"versionEndExcluding": "6.1.0",
"versionStartIncluding": "4.2",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "RTI Connext Professional versions 4.1 to 6.1.0, and Connext Micro versions 2.4 and later are vulnerable when an attacker sends a specially crafted packet to flood target devices with unwanted traffic. This may result in a denial-of-service condition and information exposure."
},
{
"lang": "es",
"value": "RTI Connext DDS Professional, Connext DDS Secure versiones 4.2x a 6.1.0, y Connext DDS Micro versiones 2.4 y posteriores, son vulnerables cuando un atacante env\u00eda un paquete especialmente dise\u00f1ado para inundar los dispositivos de destino con tr\u00e1fico no deseado. Esto puede resultar en una condici\u00f3n de denegaci\u00f3n de servicio y a una exposici\u00f3n de informaci\u00f3n"
}
],
"id": "CVE-2021-38487",
"lastModified": "2026-06-17T04:02:12.597",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 6.4,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 4.2,
"source": "3f572a00-62e2-4423-959a-7ea25eff1638",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.2,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "3f572a00-62e2-4423-959a-7ea25eff1638",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2021-38487",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-04-16T15:56:44.356177Z",
"version": "2.0.3"
}
}
]
},
"published": "2022-05-05T17:15:09.857",
"references": [
{
"source": "3f572a00-62e2-4423-959a-7ea25eff1638",
"tags": [
"Permissions Required",
"Vendor Advisory"
],
"url": "https://support.rti.com/s/login/?ec=302\u0026startURL=%2Fs%2F"
},
{
"source": "3f572a00-62e2-4423-959a-7ea25eff1638",
"tags": [
"Third Party Advisory",
"US Government Resource"
],
"url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02"
},
{
"source": "3f572a00-62e2-4423-959a-7ea25eff1638",
"url": "https://www.rti.com/vulnerabilities/#cve-2021-38487"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Permissions Required",
"Vendor Advisory"
],
"url": "https://support.rti.com/s/login/?ec=302\u0026startURL=%2Fs%2F"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory",
"US Government Resource"
],
"url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02"
}
],
"sourceIdentifier": "3f572a00-62e2-4423-959a-7ea25eff1638",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-406"
},
{
"lang": "en",
"value": "CWE-923"
}
],
"source": "3f572a00-62e2-4423-959a-7ea25eff1638",
"type": "Secondary"
}
]
}
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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.
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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.
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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.
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