# CVE-2023-37366: Denial of service in Exynos 850 firmware

> Attackers can cause a denial of service in Samsung Exynos processors by sending malformed SM messages that trigger an infinite loop.

- **Severity:** Low 2.8 (`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 14 Sep 2026
- **Updated:** 16 Sep 2026
- **Also known as:** A-297030670, GHSA-r7v3-52v7-qv84, PUB-A-297030670

## What is CVE-2023-37366?

CVE-2023-37366 is a low-severity denial of service vulnerability in Samsung Exynos 850 firmware, published on 14 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An issue was discovered in Samsung Exynos Mobile Processor, Automotive Processor, and Modem Exynos 9810, Exynos 9610, Exynos 9820, Exynos 980, Exynos 850, Exynos 1080, Exynos 2100, Exynos 2200, Exynos 1280, Exynos 1380, Exynos 1330, Exynos 9110, Exynos W920, Exynos Modem 5123, Exynos Modem 5300, an Exynos Auto T5123. In the Shannon SM Task, improper handling of a loop with an unreachable exit condition cannot guarantee the termination of a required service via a malformed SM message.

Weakness: CWE-835 (Loop with Unreachable Exit Condition)

## Which versions are affected by CVE-2023-37366?


## How do I fix CVE-2023-37366?

Apply the vendor's patch.

## Is CVE-2023-37366 being exploited?

There is no known exploitation of CVE-2023-37366 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-37366 and fix it if it is affected.

What it is: CVE-2023-37366 is a low-severity denial of service vulnerability in Samsung Exynos 850 firmware, published on 14 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-37366 in the wild and no public exploit code.

Affected product: Samsung Exynos 850 firmware. 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-2023-37366/ (Markdown: https://insights.sbomify.com/CVE-2023-37366/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-37366
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-37366
- OSV: https://osv.dev/vulnerability/CVE-2023-37366

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-37366/
Summaries are generated and may contain mistakes; the official description above is the record.