# CVE-2011-4859: Hardcoded credentials in n/a

> Remote attackers can gain unauthorized access to Schneider Electric PLC modules via hardcoded credentials on Telnet, FTP, and debug ports.

- **Severity:** Critical 10.0 (`AV:N/AC:L/Au:N/C:C/I:C/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Dec 2011
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-wrpc-6j6r-gh72

## What is CVE-2011-4859?

CVE-2011-4859 is a critical vulnerability in n/a, published on 17 Dec 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Schneider Electric Quantum Ethernet Module, as used in the Quantum 140NOE771* and 140CPU65* modules, the Premium TSXETY* and TSXP57* modules, the M340 BMXNOE01* and BMXP3420* modules, and the STB DIO STBNIC2212 and STBNIP2* modules, uses hardcoded passwords for the (1) AUTCSE, (2) AUT_CSE, (3) fdrusers, (4) ftpuser, (5) loader, (6) nic2212, (7) nimrohs2212, (8) nip2212, (9) noe77111_v500, (10) ntpupdate, (11) pcfactory, (12) sysdiag, (13) target, (14) test, (15) USER, and (16) webserver accounts, which makes it easier for remote attackers to obtain access via the (a) TELNET, (b) Windriver Debug, or (c) FTP port.

## Which versions are affected by CVE-2011-4859?

It affects 21 products.


Products: Schneider-Electric M340 Ethernet Module Bmxnoe0100, Schneider-Electric M340 Ethernet Module Bmxnoe0110, Schneider-Electric M340 Ethernet Module Bmxp342020, Schneider-Electric M340 Ethernet Module Bmxp342030, Schneider-Electric Premium Ethernet Module Tsxety4103, Schneider-Electric Premium Ethernet Module Tsxety5103, Schneider-Electric Premium Ethernet Module Tsxp57163m, Schneider-Electric Premium Ethernet Module Tsxp572634m, Schneider-Electric Premium Ethernet Module Tsxp573634m, Schneider-Electric Premium Ethernet Module Tsxp574634m, Schneider-Electric Premium Ethernet Module Tsxp575634m, Schneider-Electric Premium Ethernet Module Tsxp576634m, Schneider-Electric Quantum Ethernet Module 140cpu65150, Schneider-Electric Quantum Ethernet Module 140cpu65160, Schneider-Electric Quantum Ethernet Module 140cpu65260, Schneider-Electric Quantum Ethernet Module 140noe77100, Schneider-Electric Quantum Ethernet Module 140noe77101, Schneider-Electric Quantum Ethernet Module 140noe77111, Schneider-Electric Stb Dio Ethernet Module Stbnic2212, Schneider-Electric Stb Dio Ethernet Module Stbnip2212 and 1 more.

## How do I fix CVE-2011-4859?

No fix has been published for CVE-2011-4859 yet. Limit exposure of the affected software until one is available.

## Is CVE-2011-4859 being exploited?

There is no known exploitation of CVE-2011-4859 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-4859 and fix it if it is affected.

What it is: CVE-2011-4859 is a critical vulnerability in n/a, published on 17 Dec 2011. 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-2011-4859 in the wild and no public exploit code.

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-2011-4859/ (Markdown: https://insights.sbomify.com/CVE-2011-4859/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-4859
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-4859
- OSV: https://osv.dev/vulnerability/CVE-2011-4859

---
From sbomify Insights: https://insights.sbomify.com/CVE-2011-4859/
Summaries are generated and may contain mistakes; the official description above is the record.