FKIE_CVE-2026-37233
Vulnerability from fkie_nvd - Published: 2026-06-01 19:16 - Updated: 2026-07-22 07:10
Severity
Summary
FlexRIC v2.0.0 contains an authorization bypass in the iApp's xApp isolation mechanism. The equality function eq_xapp_ric_gen_id() in src/ric/iApp/xapp_ric_id.c compares m0->xapp_id against itself (m0->xapp_id) instead of the other argument (m1->xapp_id), effectively ignoring the xApp identity dimension. A malicious xApp connected to the iApp (port 36422) can delete any other xApp's subscriptions by sending an E42_RIC_SUBSCRIPTION_DELETE_REQUEST with a matching ric_gen_id. This breaks multi-tenant isolation in any deployment with multiple xApps sharing the same RIC.
References
| URL | Tags | ||
|---|---|---|---|
| cve@mitre.org | https://github.com/MinamiKotor1/oran-security-advisories-zhongnan-luo/blob/main/advisories/CVE-2026-37233.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": [
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"nodes": [
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"cpeMatch": [
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"criteria": "cpe:2.3:a:mosaic5g:flexric:2.0.0:*:*:*:*:*:*:*",
"matchCriteriaId": "CFFCACEE-04A8-438A-A0BA-5C1D57943CF0",
"vulnerable": true
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"negate": false,
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "FlexRIC v2.0.0 contains an authorization bypass in the iApp\u0027s xApp isolation mechanism. The equality function eq_xapp_ric_gen_id() in src/ric/iApp/xapp_ric_id.c compares m0-\u003exapp_id against itself (m0-\u003exapp_id) instead of the other argument (m1-\u003exapp_id), effectively ignoring the xApp identity dimension. A malicious xApp connected to the iApp (port 36422) can delete any other xApp\u0027s subscriptions by sending an E42_RIC_SUBSCRIPTION_DELETE_REQUEST with a matching ric_gen_id. This breaks multi-tenant isolation in any deployment with multiple xApps sharing the same RIC."
},
{
"lang": "es",
"value": "FlexRIC v2.0.0 contiene una omisi\u00f3n de autorizaci\u00f3n en el mecanismo de aislamiento de xApp de la iApp. La funci\u00f3n de igualdad eq_xapp_ric_gen_id() en src/ric/iApp/xapp_ric_id.c compara m0-\u003exapp_id consigo mismo (m0-\u003exapp_id) en lugar del otro argumento (m1-\u003exapp_id), ignorando efectivamente la dimensi\u00f3n de identidad de xApp. Una xApp maliciosa conectada a la iApp (puerto 36422) puede eliminar las suscripciones de cualquier otra xApp enviando una E42_RIC_SUBSCRIPTION_DELETE_REQUEST con un ric_gen_id coincidente. Esto rompe el aislamiento multi-inquilino en cualquier despliegue con m\u00faltiples xApps compartiendo el mismo RIC."
}
],
"id": "CVE-2026-37233",
"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"
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"ssvcV203": [
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"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-37233",
"options": [
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"exploitation": "none"
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{
"automatable": "yes"
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{
"technicalImpact": "partial"
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],
"role": "CISA Coordinator",
"timestamp": "2026-06-02T15:29:14.338927Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-06-01T19:16:33.743",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Exploit",
"Mitigation",
"Third Party Advisory"
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"url": "https://github.com/MinamiKotor1/oran-security-advisories-zhongnan-luo/blob/main/advisories/CVE-2026-37233.md"
},
{
"source": "cve@mitre.org",
"tags": [
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"url": "https://gitlab.eurecom.fr/mosaic5g/flexric"
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"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Analyzed",
"weaknesses": [
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"value": "CWE-617"
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"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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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.
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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
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