Is CVE-2026-37222 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-37222 being exploited in the wild.

How severe is CVE-2026-37222?

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-2026-37222?

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-2026-37222 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-37222?

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-2026-37222: EURECOM FlexRIC denial of service via IE count assertion in E2AP decoder

CVE-2026-37222 · Severity: info · CVSS 7.5 · Published 2026-06-01

FlexRIC is a software controller used in Open RAN (Radio Access Network) environments to manage cellular network functions. A vulnerability in how it processes network messages allows an unauthenticated remote attacker to crash the controller by sending a specially crafted message. This results in a denial of service, potentially disrupting cellular network management and operations.

Technologies: EURECOM FlexRIC. Vendors: EURECOM.

Quick answers

Is CVE-2026-37222 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-37222 being exploited in the wild.
How severe is CVE-2026-37222?: 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-2026-37222?: 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-2026-37222 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-37222?: 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

The vulnerability is classified as CWE-617 (Reachable Assertion). In FlexRIC v2.0.0, specifically within the E2AP message decoder (e.g., e2ap_dec_setup_request in src/lib/e2ap/v3_01/dec/e2ap_msg_dec_asn.c), the code uses hardcoded assert() statements to validate the number of Information Elements (IEs) in a decoded message. A remote unauthenticated attacker can send a valid E2AP PDU via SCTP to port 36421 or 36422 that contains an unexpected number of IEs (such as extra optional fields). Because the decoder asserts exact counts rather than validating against protocol-specified ranges, the process terminates via SIGABRT, causing a denial of service. No official patch was available at the time of disclosure.

Affected products

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

Timeline

2026-06-01: disclosed
2026-06-01: advisory

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.