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.

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Mon, 01 Jun 2026 21:15:00 +0000

Type Values Removed Values Added
Title Remote xApp ID Validation Failure in FlexRIC v2.0.0
Weaknesses CWE-20

Mon, 01 Jun 2026 19:00:00 +0000

Type Values Removed Values Added
Description 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.
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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-06-01T17:42:37.890Z

Reserved: 2026-04-06T00:00:00.000Z

Link: CVE-2026-37235

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-06-01T19:16:33.850

Modified: 2026-06-01T19:16:33.850

Link: CVE-2026-37235

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-01T21:00:15Z

Weaknesses