# CVE-2020-37139: Odin Secure FTP Expert 7.6.3 - 'Site Info' Denial of Service

> Local attackers can crash Odin Secure FTP Expert by pasting excessive characters into site information fields, causing a buffer overflow.

- **Severity:** Medium 4.6 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 5 Feb 2026
- **Updated:** 5 Feb 2026
- **Also known as:** GHSA-7cgm-4792-6mm2

## What is CVE-2020-37139?

CVE-2020-37139 is a medium-severity denial of service vulnerability in Odin-Secure-Ftp-Expert Odin Secure FTP Expert, published on 5 Feb 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Odin Secure FTP Expert 7.6.3 contains a local denial of service vulnerability that allows attackers to crash the application by manipulating site information fields. Attackers can generate a buffer overflow by pasting 108 bytes of repeated characters into connection fields, causing the application to crash.

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2020-37139?


## How do I fix CVE-2020-37139?

No fix has been published for CVE-2020-37139 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-37139 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37139 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-37139 and fix it if it is affected.

What it is: CVE-2020-37139 is a medium-severity denial of service vulnerability in Odin-Secure-Ftp-Expert Odin Secure FTP Expert, published on 5 Feb 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37139 exists.

Affected product: Odin-Secure-Ftp-Expert Odin Secure FTP Expert. 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-2020-37139/ (Markdown: https://insights.sbomify.com/CVE-2020-37139/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-37139
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-37139
- OSV: https://osv.dev/vulnerability/CVE-2020-37139

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-37139/
Summaries are generated and may contain mistakes; the official description above is the record.