FKIE_CVE-2026-37235
Vulnerability from fkie_nvd - Published: 2026-06-01 19:16 - Updated: 2026-07-22 07:10
Severity
Summary
FlexRIC v2.0.0 trusts the xapp_id field from E42 message payloads without binding it to the sender's SCTP association. The validation function valid_xapp_id() only checks that the value is within the assigned range. A remote unauthenticated attacker can impersonate any xApp by specifying their xapp_id in requests sent to the iApp (port 36422), causing responses to be misrouted to the victim xApp. This can crash the victim xApp, the RIC, or the iApp itself through state inconsistencies in the red-black tree data structure.
References
| URL | Tags | ||
|---|---|---|---|
| cve@mitre.org | https://github.com/MinamiKotor1/oran-security-advisories-zhongnan-luo/blob/main/advisories/CVE-2026-37235.md | Exploit, Mitigation, Third Party Advisory | |
| cve@mitre.org | https://gitlab.eurecom.fr/mosaic5g/flexric | Product |
{
"affected": [
{
"affectedData": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "cve@mitre.org"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:mosaic5g:flexric:2.0.0:*:*:*:*:*:*:*",
"matchCriteriaId": "CFFCACEE-04A8-438A-A0BA-5C1D57943CF0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "FlexRIC v2.0.0 trusts the xapp_id field from E42 message payloads without binding it to the sender\u0027s SCTP association. The validation function valid_xapp_id() only checks that the value is within the assigned range. A remote unauthenticated attacker can impersonate any xApp by specifying their xapp_id in requests sent to the iApp (port 36422), causing responses to be misrouted to the victim xApp. This can crash the victim xApp, the RIC, or the iApp itself through state inconsistencies in the red-black tree data structure."
},
{
"lang": "es",
"value": "FlexRIC v2.0.0 conf\u00eda en el campo xapp_id de las cargas \u00fatiles de los mensajes E42 sin vincularlo a la asociaci\u00f3n SCTP del remitente. La funci\u00f3n de validaci\u00f3n valid_xapp_id() solo verifica que el valor est\u00e1 dentro del rango asignado. Un atacante remoto no autenticado puede suplantar a cualquier xApp al especificar su xapp_id en las solicitudes enviadas a la iApp (puerto 36422), lo que provoca que las respuestas se enruten incorrectamente a la xApp v\u00edctima. Esto puede provocar la ca\u00edda de la xApp v\u00edctima, el RIC o la propia iApp a trav\u00e9s de inconsistencias de estado en la estructura de datos de \u00e1rbol rojo-negro."
}
],
"id": "CVE-2026-37235",
"lastModified": "2026-07-22T07:10:00.107",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-37235",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-02T15:51:55.357895Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-06-01T19:16:33.850",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Exploit",
"Mitigation",
"Third Party Advisory"
],
"url": "https://github.com/MinamiKotor1/oran-security-advisories-zhongnan-luo/blob/main/advisories/CVE-2026-37235.md"
},
{
"source": "cve@mitre.org",
"tags": [
"Product"
],
"url": "https://gitlab.eurecom.fr/mosaic5g/flexric"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-284"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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