# 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.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Jun 2026
- **Updated:** 1 Jun 2026
- **Also known as:** GHSA-rjvj-4gpj-2wgr

## 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 (Reachable Assertion)

## 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.

## Is CVE-2026-37223 being exploited?

There is no known exploitation of CVE-2026-37223 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-37223 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-37223 in the wild and no public exploit code.

Affected product: n/a. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-37223/ (Markdown: https://insights.sbomify.com/CVE-2026-37223/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-37223
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-37223
- OSV: https://osv.dev/vulnerability/CVE-2026-37223

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-37223/
Summaries are generated and may contain mistakes; the official description above is the record.