# CVE-2026-37228: Denial of service in n/a

> Remote unauthenticated attackers can crash FlexRIC components by sending oversized SCTP messages, causing a denial of service in near-RT RIC environments.

- **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:** 2 Jun 2026
- **Also known as:** GHSA-hgh6-r5p8-wcxj

## What is CVE-2026-37228?

CVE-2026-37228 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 e2ap_recv_sctp_msg() (src/lib/ep/e2ap_ep.c). The function allocates a fixed 32KB receive buffer and enforces assert(rc < len) on the sctp_recvmsg() return value. A remote unauthenticated attacker can send a single SCTP message with payload >= 32,768 bytes to crash the near-RT RIC, iApp, E2 Agent, or xApp process via SIGABRT. No valid E2AP PDU is required. All four SCTP endpoint types (ports 36421 and 36422) share this vulnerable code path. In Release builds (NDEBUG), the stripped assertion leads to a signed-to-unsigned integer overflow and potential out-of-bounds read.

Weakness: CWE-617 (Reachable Assertion)

## Which versions are affected by CVE-2026-37228?

It affects 1 product.


Products: Mosaic5g Flexric.

## How do I fix CVE-2026-37228?

No fix has been published for CVE-2026-37228 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-37228 being exploited?

There is no known exploitation of CVE-2026-37228 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2026-37234](https://insights.sbomify.com/CVE-2026-37234/): Denial of service in n/a (high 8.2)
- [CVE-2026-37226](https://insights.sbomify.com/CVE-2026-37226/): Null dereference in n/a (high 7.5)
- [CVE-2026-37229](https://insights.sbomify.com/CVE-2026-37229/): Denial of service in n/a (high 7.5)
- [CVE-2026-37230](https://insights.sbomify.com/CVE-2026-37230/): Null dereference in n/a (high 7.5)
- [CVE-2026-37231](https://insights.sbomify.com/CVE-2026-37231/): Integer overflow in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-37228 and fix it if it is affected.

What it is: CVE-2026-37228 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-2026-37228 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-2026-37228/ (Markdown: https://insights.sbomify.com/CVE-2026-37228/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-37228
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-37228
- OSV: https://osv.dev/vulnerability/CVE-2026-37228

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-37228/
Summaries are generated and may contain mistakes; the official description above is the record.