# CVE-1999-1539: Memory corruption in n/a

> Remote attackers can cause denial of service or execute arbitrary commands via buffer overflow in QVT/Term Plus FTP server.

- **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Sep 2001
- **Updated:** 1 Aug 2024
- **Also known as:** GHSA-2w9w-5m28-9576

## What is CVE-1999-1539?

CVE-1999-1539 is a high-severity memory corruption vulnerability in n/a, published on 12 Sep 2001. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Buffer overflow in FTP server in QPC Software's QVT/Term Plus versions 4.2d and 4.3 and QVT/Net 4.3 allows remote attackers to cause a denial of service, and possibly execute arbitrary commands, via a long (1) user name or (2) password.

## Which versions are affected by CVE-1999-1539?

It affects 2 products.


Products: Qpc Software Qvt Net, Qpc Software Qvt Term Plus.

## How do I fix CVE-1999-1539?

No fix has been published for CVE-1999-1539 yet. Limit exposure of the affected software until one is available.

## Is CVE-1999-1539 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-1999-1539 exists.

Public exploit code:

- QPC Software QVT Term 4.3/QVT/Net 4.3 Suite FTP Server - Denial of Service (exploitdb)

## Other vulnerabilities in n/a

- [CVE-2001-0443](https://insights.sbomify.com/CVE-2001-0443/): Memory corruption in n/a (high 7.5)
- [CVE-2001-0681](https://insights.sbomify.com/CVE-2001-0681/): Denial of service in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-1999-1539 and fix it if it is affected.

What it is: CVE-1999-1539 is a high-severity memory corruption vulnerability in n/a, published on 12 Sep 2001. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-1999-1539 exists.

Affected product: n/a. 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-1999-1539/ (Markdown: https://insights.sbomify.com/CVE-1999-1539/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-1999-1539
- NVD: https://nvd.nist.gov/vuln/detail/CVE-1999-1539
- OSV: https://osv.dev/vulnerability/CVE-1999-1539

---
From sbomify Insights: https://insights.sbomify.com/CVE-1999-1539/
Summaries are generated and may contain mistakes; the official description above is the record.