CVE-2026-37223 Denial of service in n/a
A remote unauthenticated attacker can crash the FlexRIC iApp process by sending invalid E2AP messages, causing a denial of service for the entire RIC service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-37223?
CVE-2026-37223 is a high-severity denial of service vulnerability in n/a, published on 1 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
FlexRIC v2.0.0 contains a reachable assertion in the iApp message dispatcher. The dispatcher validates incoming E2AP messages against a 9-entry whitelist using assert(). A remote unauthenticated attacker can send any decodable E2AP PDU with a message type not in the whitelist to crash the iApp process (port 36422) via SIGABRT. Since iApp and the near-RT RIC share one process, this terminates the entire RIC service and disconnects all E2 Nodes and xApps.
Weakness: CWE-617
Which versions are affected by CVE-2026-37223?
How do I fix CVE-2026-37223?
No fix has been published for CVE-2026-37223 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-37223 being exploited?
There is no known exploitation of CVE-2026-37223 in the wild and no public exploit code.
Sources
Also known as GHSA-rjvj-4gpj-2wgr.