# CVE-2025-2233: Samsung SmartThings Improper Verification of Cryptographic Signature Authentication Bypass Vulnerability

> Network-adjacent attackers can bypass authentication on Samsung SmartThings Hubs due to improper cryptographic signature verification in the local API.

- **Severity:** High 8.8 (`CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Mar 2025
- **Updated:** 26 Feb 2026
- **Also known as:** GHSA-hpm7-4h9p-phg8

## What is CVE-2025-2233?

CVE-2025-2233 is a high-severity authentication bypass vulnerability in Samsung SmartThings, published on 11 Mar 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Samsung SmartThings Improper Verification of Cryptographic Signature Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Samsung SmartThings. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the Hub Local API service, which listens on TCP port 8766 by default. The issue results from the lack of proper verification of a cryptographic signature. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-25615.

Weakness: CWE-347 (Improper Verification of Cryptographic Signature)

## Which versions are affected by CVE-2025-2233?

It affects 1 product.


Products: Samsung Smartthings.

## How do I fix CVE-2025-2233?

No fix has been published for CVE-2025-2233 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-2233 being exploited?

There is no known exploitation of CVE-2025-2233 in the wild and no public exploit code.

## Other vulnerabilities in Samsung SmartThings

- [CVE-2022-30746](https://insights.sbomify.com/CVE-2022-30746/): Missing authorization in Smart Things (high 7.5)
- [CVE-2024-34596](https://insights.sbomify.com/CVE-2024-34596/): Auth bypass in SmartThings (medium 5.9)
- [CVE-2024-20852](https://insights.sbomify.com/CVE-2024-20852/): Missing authorization in SmartThings (medium 5.9)
- [CVE-2022-30747](https://insights.sbomify.com/CVE-2022-30747/): Missing authorization in Smart Things (medium 5.5)
- [CVE-2021-25508](https://insights.sbomify.com/CVE-2021-25508/): Privilege escalation in SmartThings (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-2233 and fix it if it is affected.

What it is: CVE-2025-2233 is a high-severity authentication bypass vulnerability in Samsung SmartThings, published on 11 Mar 2025. 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-2025-2233 in the wild and no public exploit code.

Affected product: Samsung SmartThings. 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-2025-2233/ (Markdown: https://insights.sbomify.com/CVE-2025-2233/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-2233
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-2233
- OSV: https://osv.dev/vulnerability/CVE-2025-2233

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-2233/
Summaries are generated and may contain mistakes; the official description above is the record.