# CVE-2020-27267: Memory corruption in GE Digital Industrial Gateway Server

> Attackers can crash the server and potentially leak data by sending a crafted OPC UA message to vulnerable industrial connectivity products.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Jan 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-mr5h-jvqg-8jg8

## What is CVE-2020-27267?

CVE-2020-27267 is a critical memory corruption vulnerability in GE Digital Industrial Gateway Server, published on 13 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

KEPServerEX v6.0 to v6.9, ThingWorx Kepware Server v6.8 and v6.9, ThingWorx Industrial Connectivity (all versions), OPC-Aggregator (all versions), Rockwell Automation KEPServer Enterprise, GE Digital Industrial Gateway Server v7.68.804 and v7.66, and Software Toolbox TOP Server all 6.x versions, are vulnerable to a heap-based buffer overflow. Opening a specifically crafted OPC UA message could allow an attacker to crash the server and potentially leak data.

Weakness: CWE-787 (Out-of-bounds Write), CWE-416 (Use After Free)

## Which versions are affected by CVE-2020-27267?

It affects 7 products.


Products: Ge Industrial Gateway Server, Ptc Kepware Kepserverex, Ptc Opc-Aggregator, Ptc Thingworx Industrial Connectivity, Ptc Thingworx Kepware Server, Rockwellautomation Kepserver Enterprise, Softwaretoolbox Top Server.

## How do I fix CVE-2020-27267?

No fix has been published for CVE-2020-27267 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-27267 being exploited?

There is no known exploitation of CVE-2020-27267 in the wild and no public exploit code.

## Other vulnerabilities in GE Digital Industrial Gateway Server

- [CVE-2022-2825](https://insights.sbomify.com/CVE-2022-2825/): Memory corruption in KEPServerEX (critical 9.8)
- [CVE-2020-27265](https://insights.sbomify.com/CVE-2020-27265/): Memory corruption in PTC Kepware KEPServerEX; ThingWorx Industrial Connectivity; OPC-Aggregator; Rockwell Automation KEPServer Enterprise; GE Digital Industrial Gateway Server; Software Toolbox TOP Server (critical 9.8)
- [CVE-2023-5908](https://insights.sbomify.com/CVE-2023-5908/): Heap Based Buffer Overflow in PTC KEPServerEx (critical 9.1)
- [CVE-2022-2848](https://insights.sbomify.com/CVE-2022-2848/): Memory corruption in KEPServerEX (critical 9.1)
- [CVE-2020-27263](https://insights.sbomify.com/CVE-2020-27263/): Memory corruption in GE Digital Industrial Gateway Server (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-27267 and fix it if it is affected.

What it is: CVE-2020-27267 is a critical memory corruption vulnerability in GE Digital Industrial Gateway Server, published on 13 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-27267 in the wild and no public exploit code.

Affected product: GE Digital Industrial Gateway Server. 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-2020-27267/ (Markdown: https://insights.sbomify.com/CVE-2020-27267/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-27267
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-27267
- OSV: https://osv.dev/vulnerability/CVE-2020-27267

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-27267/
Summaries are generated and may contain mistakes; the official description above is the record.