CVE-2026-37220

FlexRIC v2.0.0 crashes when an SCTP association is closed before an E2_SETUP_REQUEST is sent

High · published June 1, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
48.4
In the wild
Unconfirmed
What it is

FlexRIC v2.0.0 crashes when an SCTP association is closed before an E2_SETUP_REQUEST is sent. The near-RT RIC assumes a mapping between SCTP association and E2 node always exists in the cleanup path and enforces this via assert(). A remote unauthenticated attacker can crash the near-RT RIC (port 36421) by simply completing an SCTP handshake and immediately disconnecting, without sending any E2AP message.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00608 · 48.4th percentile
Published
2026-06-01T00:00Z
EPSS history
Timeline
  • 01 JUN 00:00Z
    FlexRIC v2.0.0 crashes when an SCTP association is closed before an E2_SETUP_REQUEST is sent
    cvelistv5