# CVE-2020-28218: Other in Easergy T300 (firmware 2.7 and older)

> An attacker can trick users into unintended actions via UI layer restrictions in Easergy T300 firmware.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 11 Dec 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-q5hg-75fp-r6wm

## What is CVE-2020-28218?

CVE-2020-28218 is a medium-severity vulnerability in Easergy T300 (firmware 2.7 and older), published on 11 Dec 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A CWE-1021: Improper Restriction of Rendered UI Layers or Frames vulnerability exists in Easergy T300 (firmware 2.7 and older), that would allow an attacker to trick a user into initiating an unintended action.

Weakness: CWE-1021 (Improper Restriction of Rendered UI Layers or Frames)

## Which versions are affected by CVE-2020-28218?

It affects 1 product.


Products: Schneider-Electric Easergy T300 Firmware.

## How do I fix CVE-2020-28218?

No fix has been published for CVE-2020-28218 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-28218 being exploited?

There is no known exploitation of CVE-2020-28218 in the wild and no public exploit code.

## Other vulnerabilities in Easergy T300 (firmware 2.7 and older)

- [CVE-2020-28215](https://insights.sbomify.com/CVE-2020-28215/): Missing authorization in Easergy T300 (firmware 2.7 and older) (critical 9.8)
- [CVE-2020-7561](https://insights.sbomify.com/CVE-2020-7561/): Missing authorization in Easergy T300 with firmware 2.7 and older (critical 9.8)
- [CVE-2020-7508](https://insights.sbomify.com/CVE-2020-7508/): Auth bypass in Easergy T300 (Firmware version 1.5.2 and older) (critical 9.8)
- [CVE-2020-7512](https://insights.sbomify.com/CVE-2020-7512/): Supply chain in Easergy T300 (Firmware version 1.5.2 and older) (critical 9.8)
- [CVE-2020-7503](https://insights.sbomify.com/CVE-2020-7503/): Cross-site request forgery in Easergy T300 (Firmware version 1.5.2 and older) (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-28218 and fix it if it is affected.

What it is: CVE-2020-28218 is a medium-severity vulnerability in Easergy T300 (firmware 2.7 and older), published on 11 Dec 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2020-28218 in the wild and no public exploit code.

Affected product: Easergy T300 (firmware 2.7 and older). 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-2020-28218/ (Markdown: https://insights.sbomify.com/CVE-2020-28218/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-28218
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-28218
- OSV: https://osv.dev/vulnerability/CVE-2020-28218

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-28218/
Summaries are generated and may contain mistakes; the official description above is the record.