# CVE-2025-36754: Authentication bypass on web interface

> Attackers can bypass authentication on the web interface to modify DNS settings, facilitating man-in-the-middle attacks on Growatt ShineLan-X devices.

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:H`)
- **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:** No
- **Published:** 13 Dec 2025
- **Updated:** 16 Dec 2025
- **Also known as:** GHSA-227r-vmhh-jq3x

## What is CVE-2025-36754?

CVE-2025-36754 is a critical authentication bypass vulnerability in Growatt ShineLan-X, published on 13 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The authentication mechanism on web interface is not properly implemented. It is possible to bypass authentication checks by crafting a post request with new settings since there is no session token or authentication in place. This would allow an attacker for instance to point the device to an arbitrary address for domain name resolution to e.g. facililitate a man-in-the-middle (MitM) attack.

Weakness: CWE-290 (Authentication Bypass by Spoofing)

## Which versions are affected by CVE-2025-36754?


## How do I fix CVE-2025-36754?

No fix has been published for CVE-2025-36754 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-36754 being exploited?

There is no known exploitation of CVE-2025-36754 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-36754 and fix it if it is affected.

What it is: CVE-2025-36754 is a critical authentication bypass vulnerability in Growatt ShineLan-X, published on 13 Dec 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-2025-36754 in the wild and no public exploit code.

Affected product: Growatt ShineLan-X. 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-2025-36754/ (Markdown: https://insights.sbomify.com/CVE-2025-36754/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-36754
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-36754
- OSV: https://osv.dev/vulnerability/CVE-2025-36754

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-36754/
Summaries are generated and may contain mistakes; the official description above is the record.