Is CVE-2026-37223 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-37223 being exploited in the wild.

How severe is CVE-2026-37223?

Informational severity, with a CVSS score of 7.5, published 1 June 2026.

Which products and versions are affected?

EURECOM FlexRIC v2.0.0 through commit 6a595d8b (2025-11-12).

Is there a fix for CVE-2026-37223?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-37223 attacked?

It is attacked over the network, in a hosted service.

Am I affected by CVE-2026-37223?

Check whether you run EURECOM FlexRIC at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-37223: EURECOM FlexRIC reachable assertion in iApp message dispatcher

CVE-2026-37223 · Severity: info · CVSS 7.5 · Published 2026-06-01

FlexRIC is a software controller used in Open RAN (O-RAN) cellular networks to manage radio resources. A vulnerability in its message handling component allows a remote attacker to crash the entire controller by sending a specially crafted network message. This results in a complete service outage, disconnecting all connected cellular base stations and applications.

Technologies: EURECOM FlexRIC. Vendors: EURECOM.

Quick answers

Is CVE-2026-37223 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-37223 being exploited in the wild.
How severe is CVE-2026-37223?: Informational severity, with a CVSS score of 7.5, published 1 June 2026.
Which products and versions are affected?: EURECOM FlexRIC v2.0.0 through commit 6a595d8b (2025-11-12).
Is there a fix for CVE-2026-37223?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-37223 attacked?: It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-37223?: Check whether you run EURECOM FlexRIC at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A Reachable Assertion (CWE-617) exists in the FlexRIC iApp message dispatcher within 'src/ric/iApp/msg_handler_iapp.c'. The 'e2ap_msg_handle_iapp' function validates incoming E2AP message types against a 9-entry whitelist using the 'assert()' macro. A remote, unauthenticated attacker can send a decodable E2AP Protocol Data Unit (PDU) with a message type not present in the whitelist to SCTP port 36422. This triggers a SIGABRT, crashing the iApp process. Because the iApp and the near-RT RIC typically share a single process, this terminates the entire RIC service and disconnects all E2 Nodes and xApps. No patch was available at the time of disclosure; mitigation involves restricting access to port 36422.

Affected products

EURECOM FlexRIC v2.0.0 through commit 6a595d8b (2025-11-12)

Timeline

2026-06-01: advisory: NVD and researcher advisory published

References

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