# CVE-2017-20211: UCanCode E-XD++ Visualization Enterprise Suite Untrusted Pointer Dereference RCE

> Attacker can execute arbitrary code via crafted input to the RotateShape method in the E-XD++ ActiveX control, requiring user interaction.

- **Severity:** High 8.6 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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:** 12 Nov 2025
- **Updated:** 28 Jul 2026
- **Also known as:** GHSA-q7vh-44j8-j22p

## What is CVE-2017-20211?

CVE-2017-20211 is a high-severity vulnerability in UCanCode.Net Software E-XD++ Visualization Enterprise Suite, published on 12 Nov 2025. 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

UCanCode E-XD++ Visualization Enterprise Suite contains an untrusted pointer dereference vulnerability via the TKDRAWCAD.TKDrawCADCtrl.1 ActiveX control. This is because it exposes a RotateShape method that dereferences a user-supplied pointer without sufficient validation. A crafted input may cause the control to dereference an attacker-controlled pointer, enabling remote code execution in the context of the hosting process. The vulnerability requires user interaction (instantiation of the ActiveX control via a web page or a file).

Weakness: CWE-823 (Use of Out-of-range Pointer Offset)

## Which versions are affected by CVE-2017-20211?


## How do I fix CVE-2017-20211?

No fix has been published for CVE-2017-20211 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-20211 being exploited?

There is no known exploitation of CVE-2017-20211 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-20211 and fix it if it is affected.

What it is: CVE-2017-20211 is a high-severity vulnerability in UCanCode.Net Software E-XD++ Visualization Enterprise Suite, published on 12 Nov 2025. 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-2017-20211 in the wild and no public exploit code.

Affected product: UCanCode.Net Software E-XD++ Visualization Enterprise Suite. 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-2017-20211/ (Markdown: https://insights.sbomify.com/CVE-2017-20211/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-20211
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-20211
- OSV: https://osv.dev/vulnerability/CVE-2017-20211

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-20211/
Summaries are generated and may contain mistakes; the official description above is the record.